The Epsilon Model 3543 is a rugged, long gauge length extensometer for testing rebar and other high-energy specimens. It comes in gauge lengths from 50 mm up to 1000 mm and a measuring range up to 100 mm.
To prevent damage at specimen failure, the unit is designed so that the two halves of the extensometer come apart. It is built with a 350-ohm strain gage bridge for compatibility with most test systems. Hardened tool steel knife edges can be easily replaced with a spare set that comes with the unit. Options for high temperature extend the operation to +150 °C (300 °F).
The unit includes a foam-lined case, as well as a standard quick attach kit for quick mounting to specimens.