Extensometers for materials testing Extensometer Knowledge Center Extensometer Tech Notes General Topics Calibration & Verification Thermal Effects & Non-Ambient Testing Optimizing Test Results & Data Quality Model-Specific Tech Notes Tech Notes page → Extensometer Video Library Learn about extensometers with these short videos showing extensometer applications, demonstrations and setups. Extensometer Video Library page → Extensometer Basics What is gauge length? What is measuring range? What is an extensometer, and why are they used? Extensometer Basics page → Repairs/Service If your unit is in need of service, calibration or repair, initiate the RMA process with us and we will be happy to assist. Get Our Newsletter Sign up for our newsletter to get the most up-to-date information on products and services. Download Catalog Our 2020 Extensometer Catalog, Version 110 is now available! Not finding something you’re looking for? Ask us about a custom quote.