This instrument is to be used on Tensile or Universal testing machines
to find out Proof stress & Young's modulus values.
In case of many brittle materials such as high carbon steels, alloy
light aluminium & magnesium alloys, it is difficult to get
For such materials stress corresponding to a certain allowable amount
of plastic deformation is terrned as proof stress say 0.1 % or 0.2%
The measuring range is upto 5mm & resolution is 0.001mm.
Standard two fixed gauge lengths of 25 & 50 mm is provided.
Different sizes gauge lengths can also be given at an additional cost.
If this extensometer is ordered with a computerized UTM, then a
special menu driven application software is provided, which accepts
load & extension values & evaluates proof stress values.
The measurement accuracy satisfies all requirements of
Class-1 as per IS:12872-1990.