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- Non-Contact Extensometers
  - View Non-Contact Extensometers – 2 models in this group for non-contacting strain measurement. Covers a range of gauge lengths and measuring ranges.
  - Model: Epsilon ONE® – Non-Contacting Optical Extensometers
    - Non-Contacting Optical Extensometers – Epsilon ONE®
      High-precision optical extensometers with industry-leading resolution, accuracy, speed, and ease of use. Measures axial strain and elongation for a wide range of applications. ±10V output is compatible with any testing system.
      
      Gauge Lengths: User selectable, small as 2 mm
      Measuring Ranges: <1% to >1000%, depending on gauge length and field of view
      Field of View: 52 - 500 mm
      Key Features: Non-contacting, high precision, high speed, telecentric optics, Instant Reset, Always On / Always Running, laser alignment, ±10V output
      
      ➜ Features and specifications
      ➜ Applications
      ➜ Advantages
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  - Models LE-05 – Non-Contacting Laser Extensometers
    - Non-Contacting Laser Extensometers – Models LE-05
      These extensometers are high precision non-contacting units for strain measurement in materials testing. They use a high speed laser scanner to measure the spacing between reflective tape strips on the sample. The measurement range is 8 to 127 mm (0.3 to 5 inches).
      
      Gauge Lengths: User selectable
      Measuring Ranges: User selectable
      Temperature Range: Ambient to 425 °C
      Key Features: Non-contacting
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- Axial Extensometers
  - View Axial Extensometers – 7 models in this group cover tension, compression and cyclic testing with a huge variety of gauge lengths and measuring ranges. Covers temperatures from -265 to +200 °C (-450 to +400 °F).
  - Model 3542 – Axial Extensometers
    - General purpose extensometers for axial tensile, compression, and cyclic testing. Gauge lengths from 20 to 80 mm (and 0.8 to 2 inches) and full scale measuring ranges from 5% to 100% strain.
      
      Gauge Lengths: 20 – 80 mm
      Measuring Ranges: 5% – 100%
      Temperature Range: -270 °C to 200 °C with LHT option
      Key Features: Quick attach, adapter kits to change gauge lengths
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  - Model 3442 – Miniature / Low Profile Extensometers
    - Miniature / Low Profile Extensometers – Model 3442
      Small profile and ultra-light weight, these units are appropriate for testing small and delicate samples yet rugged enough for daily use on standard specimens. Ideal for wire specimens, sheet materials, and standard ASTM or ISO specimen geometries, and excellent for low and high cycle fatigue testing.
      
      Gauge Lengths: 3 – 50 mm
      Measuring Ranges: 5% – 100%
      Temperature Range: -270 °C to 200 °C with -LHT option
      Key Features: Low profile, light weight, adapter kits to change gauge lengths
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  - Model 3542L – Long Gauge Length Extensometers
    - Long Gauge Length Extensometers – Model 3542L
      Long gauge length extensometers with gauge lengths 100 mm (4 inches) or greater for tensile and compression testing. These units are for long gage length applications where low level strain measurements such as offset yield are required.
      
      Gauge Lengths: 100 – 600 mm
      Measuring Ranges: ±2.5 mm up to +25.0 mm/-6.0 mm
      Temperature Range: -270 °C to 200 °C with LHT option
      Key Features: Extra-long gauge length
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  - Model 3543 – Rugged, Long Gauge Length Extensometers
    - Rugged, Long Gauge Length Extensometers – Model 3543
      This model is available in gauge lengths from 50 mm (2 inches) and larger, with measuring ranges up to 100 mm (4 inches). It is a uniquely designed unit that may be left on through specimen failure. These extensometers are widely used where long samples are required. They are ideal for testing steel re-bar, weld joints, and wire materials.
      
      Gauge Lengths: 50 – 600 mm
      Measuring Ranges: +25 mm, +50 mm, +100 mm
      Temperature Range: 1 °C to 150 °C with -HT1 option
      Key Features: Large gauge length, rugged, rebar testing
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  - Model 3442AVG – Averaging Axial Extensometers
    - Averaging Axial Extensometers – Model 3442AVG
      Measures strain on opposite sides of the specimen and outputs the average. Features self-setting gauge length.
      
      Gauge Lengths: 10 – 50 mm
      Measuring Ranges: ±0.5 mm, ±1.0 mm, +2.5 mm
      Temperature Range: -270 °C to 200 °C with -LHT option
      Key Features: Self-setting gauge length, compact
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  - Model 3800 – High Elongation Extensometers
    - High Elongation Extensometers – Model 3800
      Designed for plastics, rubber and elastomer testing, these extensometers have very long measuring ranges. Their unique design allows testing to failure and minimizes interaction with the sample.
      
      Gauge Lengths: 20 – 50 mm
      Measuring Ranges: +250 mm and +500 mm
      Temperature Range: -40 °C to 100 °C
      Key Features: High elongation extensometer
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- High Temperature Axial Extensometers
  - View High Temp. Axial Extensometers – 5 models cover a variety of applications for high temperature testing. 1 un-cooled model for use inside chambers up to 700 °C (1300 °F). 4 models for use with split furnaces and induction heating up to 1600 °C (2900 °F).
  - Model 3448 – High Temperature Self-Supporting Extensometers (1200 °C)
    - High Temperature Self-Supporting Extensometers (1200 °C) – Model 3448
      Designed for use with furnaces and induction heating systems, these extensometers use Epsilon’s exclusive, self-supporting design. A wide range of options cover most testing applications.
      
      Gauge Lengths: 10 – 50 mm
      Measuring Ranges: 5% – 100%
      Temperature Range: Ambient to 1200 °C
      Key Features: Self-supporting furnace extensometer
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  - Model 3549 – High Temperature Hot Mountable Furnace Extensometers (1200°C or 1600°C)
    - High Temperature Hot Mountable Furnace Extensometers (1200°C or 1600°C) – Model 3549
      This model can be connected to the test sample in a few seconds. With very low sensitivity to vibrations, this hot mountable unit is ideal for the demanding requirements of strain controlled, elevated temperature axial testing and other common test methods.
      
      Gauge Lengths: 10 – 50 mm
      Measuring Ranges: 10% – 100%
      Temperature Range: Ambient to 1600 °C with -HT option
      Key Features: Hot-mountable furnace extensometer
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  - Model 7650A – High Temperature, Low Strain, Extended Performance Capacitive Extensometers (1200°C or 1600°C)
    - High Temperature, Low Strain, Extended Performance Capacitive Extensometers (1200°C or 1600°C) – Model 7650A
      High precision extensometer measures axial strains on specimens at temperatures up to 1600 °C (2900 °F). Compatible with materials testing furnaces or induction heating. May be used for strain-controlled, high frequency fatigue tests. Slide mounting system enables mounting to hot specimens in seconds.
      
      Gauge Lengths: 12.5 – 25 mm
      Measuring Ranges: +2.5 mm / -0.5 mm typical
      Temperature Range: Ambient to 1600 °C with -HT option
      Key Features: Hot-mountable, extended performance furnace extensometer
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  - Model 3648 – High Temperature, Low Contact Force Capacitive Extensometers (1200°C or 1600°C)
    - High Temperature, Low Contact Force Capacitive Extensometers (1200°C or 1600°C) – Model 3648
      This model was designed for low contact force applications with split type materials testing furnaces or induction heaters. It features very low specimen contact force and includes a slide bracket for mounting. Liquid cooling allows use to 1200°C (2200°F) standard or 1600°C (2900°F) with the high temperature option.
      
      Gauge Lengths: 10 – 50 mm
      Measuring Ranges: Up to ±2.5 mm
      Temperature Range: Ambient to 1600 °C with -HT option
      Key Features: Hot-mountable, ultra-low contact force furnace extensometer
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  - Model 7642 – High Temperature Un-Cooled Extensometers (700 °C)
    - High Temperature Un-Cooled Extensometers (700 °C) – Model 7642
      For use in environmental chambers where the entire extensometer must be exposed to elevated temperatures. These capacitive extensometers may be used up to 700 °C (1300 °F) without any cooling.
      
      Gauge Lengths: 10 – 50 mm
      Measuring Ranges: 2.5 mm to 12.5 mm
      Temperature Range: Ambient to 700 °C
      Key Features: Uncooled axial extensometer for environmental chambers
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- Fracture Mechanics Clip-On Gages
  - $fracture_mechanics_COD_gage-Model_3541-with_CT_specimen-overview$ View Fracture Mechanics Clip-On Gages – 3 models cover a broad range of gauge length, measuring ranges and temperatures, for fracture tests in compliance with various standards.
  - Model 3541 – Fracture Mechanics Clip-On Gages
    - $fracture_mechanics_COD_gage-Model_3541-with_CT_specimen$ Fracture Mechanics Clip-On Gages – Model 3541
      For fracture mechanics studies, these COD gages are in compliance with standardized test methods, such as ASTM E1820 for determination of fracture toughness properties of metallic materials.
      
      Gauge Lengths: 3 – 20 mm
      Measuring Ranges: 2.5 mm - 12.5 mm
      Temperature Range: -270 °C to 200 °C with -LHT option
      Key Features: ASTM E399 and E1820 versions available; some models may be used for da/dN at 50 Hz or more
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  - Model 3548COD – High Temperature Furnace COD Gages (1200 °C or 1600 °C)
    - High Temperature Furnace COD Gages (1200 °C or 1600 °C) – Model 3548COD
      High temperature COD gages for use in split type materials testing furnaces with a slot for the ceramic rods. Liquid-cooled and bracket mounted, these COD gages are for use to 1200 °C (2200 °F). The high temperature option allows use to 1600 °C (2900 °F). They are specifically designed for fracture mechanics testing.
      
      Gauge Lengths: 5 – 20 mm
      Measuring Ranges: 2.5 mm – 12.5 mm
      Temperature Range: Ambient to 1600 °C
      Key Features: Furnace COD gage
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  - Model 7641 – High Temperature Clip-On Gages (700 °C)
    - High Temperature Clip-On Gages (700 °C) – Model 7641
      Designed for fracture mechanics testing in environmental chambers where the entire gage must be exposed to elevated temperatures. These capacitive sensors may be used up to 700 °C (1300 °F) without any cooling.
      
      Gauge Lengths: 3 – 12 mm
      Measuring Ranges: 2.5 mm to 12.5 mm
      Temperature Range: Ambient to 700 °C
      Key Features: Uncooled COD gage for environmental chambers
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- Deflectometers
  - View Deflectometers – Widely used for measuring deformations in three and four point bend tests, compression tests and a variety of general purpose deformations.
  - Model 3540 – Deflection Gages (Deflectometers)
    - Deflection Gages (Deflectometers) – Model 3540
      Widely used for measuring deformations in three and four point bend tests, compression tests and a variety of general purpose deformations. These strain gaged devices come with a magnetic base for easy mounting.
      
      Measuring Ranges: 1 – 50 mm
      Temperature Range: -270 °C to 200 °C with -LHT option
      Key Features: High sensitivity deflection measurement on any flat surface
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- Transverse and Diametral Extensometers
  - View Transverse and Diametral Extensometers – 5 models cover most any test requirement and can be used with axial extensometers at the same time. Miniature and standard units, also Poisson’s ratio and r-value units. Available options cover temperatures from -270 °C to +1000 °C
  - Model 3575 – Transverse (Diametral) Extensometers
    - Transverse (Diametral) Extensometers – Model 3575
      Designed for general purpose transverse or diametral strain measurement on axially loaded specimens. This model may be used simultaneously with the Model 3542 axial extensometer.
      
      Specimen Size: Up to 25 mm width or diameter
      Measuring Ranges: ±0.5 mm to ±5.0 mm
      Temperature Range: -270 °C to 200 °C with -LHT option
      Key Features: Durability, easy mounting
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  - Model 3475 – Miniature Transverse (Diametral) Extensometers
    - Miniature Transverse (Diametral) Extensometers – Model 3475
      A miniature extensometer designed for general purpose transverse or diametral strain measurements on small or thin specimens. May be used simultaneously with the Model 3442 miniature axial extensometers or the Model 3542 axial extensometers.
      
      Specimen Size: Up to 25 mm width or diameter
      Measuring Ranges: ±0.25 mm to ±1.25 mm
      Temperature Range: -270 °C to 200 °C with -LHT option
      Key Features: Low profile, durability, light weight
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  - Model 3560-BIA – Bi-Axial Averaging Extensometers
    - Bi-Axial Averaging Extensometers – Model 3560-BIA
      A single integral unit provides simultaneous lateral (transverse) strain and axial strain measurements.
      
      Gauge Lengths: 10 – 50 mm
      Measuring Ranges: ±5% and ±10% axial; ±1.0 mm transverse
      Temperature Range: -270 °C to 200 °C with -LHT option
      Key Features: Averaged axial and averaged transverse measurements; measures Poisson’s ratio with the average of two measurements
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  - Model 3580 – High Temperature Diametral Extensometers (1000 °C)
    - High Temperature Diametral Extensometers (1000 °C) – Model 3580
      For transverse or diametral strain measurements at temperatures to 1000 °C (1832 °F). These extensometers may be used with furnaces having a side entry slot for an extensometer or with induction heating systems. They utilize a proprietary, rugged dual flexure design.
      
      Specimen Size: Customizable
      Measuring Ranges: 0.5 mm – 5.0 mm
      Temperature Range: Ambient to 1600 °C
      Key Features: Diametral extensometer for furnaces
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  - Model 7675 – High Temperature Transverse Extensometers (700 °C)
    - High Temperature Transverse Extensometers (700 °C) – Model 7675
      Designed for transverse or diametral strain measurement in environmental chambers where the entire extensometer must be exposed to elevated temperatures. These capacitive extensometers may be used up to 700 °C (1300 °F) without any cooling.
      
      Specimen Size: Up to 25 mm width or diameter
      Measuring Ranges: ±1.2 mm to ±2.5 mm
      Temperature Range: Ambient to 700 °C
      Key Features: Uncooled transverse extensometer for environmental chambers
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- Rock, Concrete and Asphalt Extensometers
  - View Rock, Concrete and Asphalt Extensometers – Seven models cover axial, circumferential and diametral testing on aggregate material.
  - Model 3542RA – Averaging Axial Extensometers for Large Compression Samples
    - Averaging Axial Extensometers for Large Compression Samples – Model 3542RA
      Designed primarily for compressive strength tests on rock, concrete and other large compression samples, this model measures axial strain on opposite sides of the test specimen, and the output is an average of the two readings.
      
      Gauge Lengths: 25 – 200 mm
      Measuring Ranges: ±1.2 mm to ±6.0 mm
      Temperature Range: -270 °C to 200 °C with -LHT option
      Key Features: Averaging axial rock/concrete extensometer
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  - Model 3442RA1 – Miniature Averaging Axial Extensometers
    - Miniature Averaging Axial Extensometers – Model 3442RA1
      With gauge lengths of 1 and 2 inches (25 and 50 mm) and measuring ranges of 0.050 and 0.100 inches (1.2 and 2.5 mm), the Model 3442RA1 was designed for applications where tensile or compressive strength tests on small rock, concrete and other small compression samples is desired.
      
      Gauge Lengths: 25 – 50 mm
      Measuring Ranges: ±1.25 mm and ±2.5 mm
      Temperature Range: -270 °C to 200 °C with -LHT option
      Key Features: Miniature averaging axial rock/concrete extensometer
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  - Model 3544 – Circumferential Extensometers
    - Circumferential Extensometers – Model 3544
      Designed for concrete and rock compression testing or for compression tests on other large samples. This model may be used simultaneously with the Model 3542RA axial extensometers.
      
      Gauge Lengths: 50 – 200 mm
      Measuring Ranges: 2 mm to 12 mm
      Temperature Range: -40 °C to 200 °C with -HT2 option
      Key Features: Circumferential
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  - Model 3909 – Extensometers for Simple Performance Testing of Asphalt
    - Extensometers for Simple Performance Testing of Asphalt – Model 3909
      Designed for measuring axial displacements in the simple performance tests prescribed by NCHRP Report 465, and determining dynamic modulus of hot mix asphalt per AASHTO TP062.
      
      Gauge Lengths: 70 – 100 mm
      Measuring Ranges: ±0.5 mm
      Temperature Range: -270 °C to 200 °C with -LHT option
      Key Features: Magnetic mounting on gauge points adhered to the specimen
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  - Model 3910 – Extensometers for Creep Compliance and Tensile Strength Testing of Asphalt
    - Extensometers for Creep Compliance and Tensile Strength Testing of Asphalt – Model 3910
      Designed to many of the needs for testing asphalt core samples in 4 and 6 inch diameters. The unit meets test method requirements for strain measurement developed under the U.S. Federal Highways SHRP program
      
      Gauge Lengths: 25 – 100 mm
      Measuring Ranges: ±0.5 mm
      Temperature Range: -270 °C to 200 °C with -LHT option
      Key Features: Biaxial deformation measurement (lateral and vertical)
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  - Model 3911 – Extensometers for Indirect Tensile Testing of Asphalt
    - Extensometers for Indirect Tensile Testing of Asphalt – Model 3911
      Designed to meet many of the needs for testing asphalt core samples in 4 and 6 inch diameters. It meets test method requirements for strain measurement developed under the U.S. Federal Highways SHRP program.
      
      Specimen Size: 100 mm and 150 mm
      Measuring Range: 0.76 mm to 2.0 mm
      Temperature Range: -270 °C to 200 °C with -LHT option
      Key Features:Indirect tensile testing of asphalt
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  - Model 3975 – Diametral Extensometers for Rock and Concrete Testing
    - Diametral Extensometers for Rock and Concrete Testing – Model 3975
      Designed for accurate measurement of small diametral strains such as those required to determine Poisson’s ratio of rock, concrete and asphalt samples. The units are designed to be used in conjunction with the Model 3542RA axial averaging extensometer.
      
      Specimen Size: Customizable
      Measuring Ranges: 0.76 mm to 2.0 mm
      Temperature Range: -270 °C to 200 °C with -LHT option
      Key Features: Diametral
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- Averaging, Bi-Axial, and Axial/Torsional Extensometers
  - Model 3442AVG – Averaging Axial Extensometers
    - Averaging Axial Extensometers – Model 3442AVG
      Measures strain on opposite sides of the specimen and outputs the average. Features self-setting gauge length.
      
      Gauge Lengths: 10 – 50 mm
      Measuring Ranges: ±0.5 mm, ±1.0 mm, +2.5 mm
      Temperature Range: -270 °C to 200 °C with -LHT option
      Key Features: Self-setting gauge length, compact
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  - View Averaging, Bi-Axial and Axial/Torsional Extensometers – 4 models for axial averaging, axial/transverse, axial/torsional, and in-plane biaxial over a wide range of temperatures.
  - Model 3560-BIA – Bi-Axial Averaging Extensometers
    - Bi-Axial Averaging Extensometers – Model 3560-BIA
      A single integral unit provides simultaneous lateral (transverse) strain and axial strain measurements.
      
      Gauge Lengths: 10 – 50 mm
      Measuring Ranges: ±5% and ±10% axial; ±1.0 mm transverse
      Temperature Range: -270 °C to 200 °C with -LHT option
      Key Features: Averaged axial and averaged transverse measurements; measures Poisson’s ratio with the average of two measurements
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  - Model 3550 – Axial/Torsional Extensometers
    - Axial/Torsional Extensometers – Model 3550
      Designed for simultaneously measuring axial and torsional deflections on specimens tested in axial/torsional machines.
      
      Gauge Lengths: 10 – 25 mm
      Measuring Ranges: 5% and 10% axial; Up to 2.5° torsional
      Temperature Range: -270 °C to 200 °C with -LHT option
      Key Features: Axial-torsional
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  - Model 7650 – High Temperature Axial/Torsional Extensometers (1200°C or 1600°C)
    - High Temperature Axial/Torsional Extensometers (1200°C or 1600°C) – Model 7650
      Simultaneously measures axial and torsional strains at high temperatures on specimens tested in axial/torsional machines. For use with materials testing furnaces or induction heating up to 1600 °C (2900 °F). May be used for bi-axial strain controlled fatigue. Slide mounting system enables mounting to hot specimens in seconds.
      
      Gauge Lengths: 12.5 – 25 mm
      Measuring Ranges: +2.5 mm / -0.5 mm axial and ±2° torsional typical
      Temperature Range: Ambient to 1600 °C with -HT option
      Key Features: Hot-mountable, axial-torsional furnace extensometer
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  - Model 7651 – High Temperature XY Planar Biaxial Extensometer (1200°C or 1600°C)
    - High Temperature XY Planar Biaxial Extensometer (1200°C or 1600°C) – Model 7651
      Simultaneously measures in-plane bi-axial strains at high temperatures on specimens tested in X-Y bi-axial machines. For use with materials testing furnaces or induction heating up to 1600 °C (2900 °F). May be used for bi-axial strain controlled fatigue. Slide mounting system enables mounting to hot specimens in seconds.
      
      Gauge Lengths: 12.5 – 25 mm
      Measuring Ranges: +2.5 mm / -0.5 mm typical
      Temperature Range: Ambient to 1600 °C with -HT option
      Key Features: Hot-mountable, XY planar biaxial furnace extensometer
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- Bolt Proof, Lap Shear, and Specialty Extensometers
  - Bolt Proof, Lap Shear & Specialty Extensometers – Specialized extensometers for bolt proof testing, rebar splice assemblies, lap / sandwich core shear, and testing while submerged in liquids.
  - Model 3565 – Bolt Extensometers for Proof Load Testing
    - Bolt Extensometers for Proof Load Testing – Model 3565
      Designed for measuring small measuring strain ranges as required for proof load testing of bolts and similar applications such as yield measurement.
      
      Gauge Lengths: 25 – 150 mm (plus optional extensions)
      Measuring Ranges: 1.25 mm
      Temperature Range: -270 °C to 200 °C with LHT option
      Key Features: Bolt proof testing
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  - Model 3567 – Rebar Coupler and Rebar Splice Extensometers
    - Rebar Coupler and Rebar Splice Extensometers – Model 3567
      Extensometers for measuring elongation of rebar coupler, splice, and sleeve assemblies. Use for tension, cyclic, slip, and differential elongation tests.
      
      Gauge Lengths: 95 – 975 mm
      Measuring Ranges: +12.5 mm
      Temperature Range: -40 °C to 100 °C
      Key Features: Rebar coupler / splice extensometer
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  - Model 4013 – Averaging Extensometers for ASTM D5656 Shear Tests
    - Averaging Extensometers for ASTM D5656 Shear Tests – Model 4013
      Designed specifically for performing tests in accordance with ASTM D5656, Standard Test Method for Thick-Adherend Metal Lap-Shear Joints for Determination of the Stress-Strain Behavior of Adhesives in Shear by Tension Loading. The deformation is measured on opposite sides of the test specimen and the output is an average of the two readings.
      
      Measuring Ranges: 0.5 mm to 3.0 mm
      Temperature Range: -270 °C to 200 °C with -LHT option
      Key Features: D5656 adhesive lap shear test
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  - Model 3421 – Sandwich Core Shear Extensometers for ASTM C273
    - Sandwich Core Shear Extensometers for ASTM C273 – Model 3421
      For measuring shear properties of sandwich cores to ASTM C273. Simple clip-on design attaches in seconds and provides repeatable test results.
      
      Measuring Ranges: ±5 mm shear displacement
      Temperature Range: -270 °C to 200 °C with -LHT option
      Key Features: Sandwich core shear and rigid cellular plastic shear
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  - Model 4030 – Submersible Extensometers
    - Submersible Extensometers – Model 4030 (discontinued, contact Epsilon)
      Submersible extensometers designed for testing in water, saline solutions, and other liquids compatible with the materials of construction.
      
      Gauge Lengths: 10 – 25 mm
      Measuring Ranges: ≤5 mm
      Temperature Range: -40 °C to 100 °C
      Key Features: Submersible
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- Customized Extensometers
- Knife Edges
- Interface Electronics and Signal Conditioners
  - View Interface Electronics and Signal Conditioners – For customers who do not have signal conditioning as part of their test controls. 1 analog and 1 digital version for strain gaged sensors.
  - Model SGA – Analog Signal Conditioners
    - Analog Signal Conditioners – Model SGA
      The SGA series signal conditioners are ideal for cyclic and high speed testing where no display is needed. Available in single and dual channel versions, they provide the signal conditioning electronics needed for a strain gage based extensometer.
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  - Model DSCUSB – USB Extensometer Interface
    - USB Extensometer Interface – Model DSCUSB
      The DSCUSB provides USB plug-and-play capability to any strain gauged extensometer. They are useful when you wish to acquire data directly to your computer without the need for a controller.
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- Extensometer Calibrators
  - View Calibrators – Digital models with up to 20 nanometer resolution; axial and axial/torsional models. Provided with calibration traceable to NPL.
  - Model 3590VHR – Very High Resolution Digital Electronic Calibrators
    - Very High Resolution Digital Electronic Calibrators – Model 3590VHR
      Epsilon’s very high resolution calibrator features 20 nanometers (0.8 microinches) resolution and has 50 mm (2 inches) of measuring range. The 3590VHR is provided with a Touch Display digital readout and software to display the calibrator readings on a computer. The 3590VHR calibrator meets the accuracy and resolution requirements for ASTM E83 Class B-1 for a 6 mm gauge length and greater extensometers and ISO 9513 Class 0,5 over the full measuring range of the calibrator.
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  - Model 3590 – Digital Electronic Calibrators
    - Digital Electronic Calibrators – Model 3590
      Epsilon’s standard calibrator features 0.001 mm (50 microinches) resolution and has 50 mm (2 inches) of measuring range. The autozero button and digital display greatly simplify calibration of extensometers. The 3590 calibrator is useful for extensometer calibration and verification with test systems.
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  - Model 3590AT – Axial-Torsional Digital Electronic Calibrators
    - Axial-Torsional Digital Electronic Calibrators – Model 3590AT
      Epsilon’s axial/torsional calibrator features 0.001 mm (50 microinches) resolution. It has 50 mm (2 inches) of measuring range axial and torsional rotation where 1.27 mm (0.050 inch) of linear motion equates to 1° angle of twist. The autozero button and digital display greatly simplify calibration of extensometers. The 3590AT calibrator is designed to be used with the Model 3550 and 7650 axial/torsional extensometers.
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- Calibration References
  - View Calibration References – A simple and inexpensive way to transfer Epsilon’s calibration of and extensometer to the existing signal conditioner in your test system controls.
  - Model ESCS – Epsilon Shunt Calibration System
    - Epsilon Shunt Calibration System – Model ESCS
      Designed to allow Epsilon’s extensometer calibration to be easily transferred to a customer’s electronics, the Epsilon Shunt Calibration System is available for any strain-gaged extensometer.
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  - Model VREF – 10V Calibration Reference Module
    - 10V Calibration Reference Module – Model VREF
      10V calibration reference for high level devices.
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