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Epsilon - MODEL 3575 Transverse (Diametral) Extensometers


Epsilon - MODEL 3575 Transverse (Diametral) Extensometers

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.

Self-supporting on the test sample, these extensometers will work on any width or diameter specimen from 0 to 1 inch (25 mm). They are commonly used for measurement of Poisson’s ratio, for transverse measurements with anisotropic materials like many composites and for sheet metal testing such as r-value determination. Most often they are used simultaneously with Epsilon’s axial extensometers.

These units easily clip onto the sample and are held in place with an integral spring. Rounded contact edges maintain the position on the specimen. All are high accuracy strain gaged units, compatible with most test controllers.

The Model 3575 extensometers are strain gaged devices, making them compatible with any electronics designed for strain gaged transducers. Most often they are connected to a test machine controller. The signal conditioning electronics for the extensometer is typically included with the test machine controller or may often be added. In this case the extensometer is shipped with the proper connector and wiring to plug directly into the electronics. For systems lacking the required electronics, Epsilon can provide a variety of solutions, allowing the extensometer output to be connected to data acquisition boards, chart recorders or other equipment.


  • May be left on through specimen failure.
  • Full bridge, 350 ohm strain gaged design for compatibility with nearly any test system.
  • All models will measure both positive and negative displacements.
  • All standard units have linearity readings of 0.20% or better.
  • Includes high quality foam lined case and spare set of tool steel knife edges.
  • Rugged, dual flexure design for strength and improved performance. Much stronger than single flexure designs, this also allows cyclic testing at higher frequencies.
  • Easy to mount, with integral springs to keep the extensometer on the sample.
  • Self-supporting on the specimen.

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