Epsilon Technology Launches Extensometer Designed for Increased Productivity and Convenience

Jackson, WY, USA - Epsilon Technology introduces the Model 3742 Automatic Gauge Length Extensometer, designed for increased materials testing productivity.

Model 3742 sets the gauge length automatically, eliminating gauge pins, and enabling more rapid and repeatable materials testing. Additionally, its Quick-Swap gauge length system allows tool-free gauge length changes in seconds. Clamping adjustments can also be made without tools, saving setup time, and its gauge length fine adjustment feature makes fine-tuning, when necessary, quick and easy.

Engineered with a robust dual-flexure design and hardened, replaceable steel knife edges, the extensometer provides accurate strain measurements for tensile, compression, and cyclic testing of metals, plastics, composites, and ceramics. Options are available for temperatures from -270 °C to +200 °C, and mechanical overtravel stops protect the device.

Fully compliant with ISO 9513, ISO 6892-1, ASTM E83, ASTM E8, and related standards, the Model 3742 is suitable for closed-loop strain control applications. It provides continuous, high-resolution strain feedback to testing machine controllers, enabling continuous strain rate adjustments during testing for maximum accuracy and repeatability.

The device uses a full-bridge 350-ohm strain gauge configuration and is compatible with nearly all materials testing machines.

Available beginning November 2025, the Model 3742 can have gauge lengths from 25 mm to 100 mm and measuring ranges up to +50 mm extension. It represents Epsilon’s commitment to delivering high-performance extensometers designed for demanding quality control, production, and research environments.

For specifications and ordering, visit www.epsilontech.com/3742.

New COD Gages for Fracture Mechanics and da/dN Testing up to 600 °C

New high-temperature COD gages with improved accuracy and higher test frequency capabilities measure crack length at temperatures up to 600 °C. Use for KIC, JIC, R-curve, and Fatigue Crack Growth testing in an environmental chamber – no cooling of the COD gage is required. http://epsilontech.com/7641.htm

New Transverse Extensometers for Measuring Poisson’s Ratio at 600 °C

For measuring Poisson’s Ratio at temperatures up to 600 °C, Epsilon Technology announces the Model 7675 transverse extensometer. Use the Model 7675 together with the Model 7642 high-temperature axial extensometer in an environmental chamber from ambient up to 600 °C – no extensometer cooling is required. http://epsilontech.com/7675.htm

New Extensometers Boost Strain Measurement Accuracy and Extend Temperature Limits up to 600 °C

Epsilon Technology introduces new high-temperature extensometers with maximum temperature increased to 600 °C, improved strain measurement accuracy, better strain control performance, and higher test frequencies. http://epsilontech.com/7642.htm

This week Epsilon Technology welcomed the distinguished US Senator from Wyoming Mike Enzi into our facility for a tour.

Laboratory Testing Inc. has a nice video showing elevated temperature tensile testing featuring a Epsilon Model 3549 high temperature, hot mountable, furnace extensometer . Notice the ease of operation of the device mounted on a slide bracket.

http://youtu.be/dnJN1zfRQt8

Epsilon Technology just published its inaugural quarterly e-Newsletter. Keep up to date with what is new at Epsilon Technology, the Material Testing industry and Strain Measuring devices. To sign-up email jstuart@epsilontech.com or visit us at http://www.epsilontech.com/feedback.htm