Our precision Engineered Mechanical Extensometer (model-REM1) measures elongation of test specimen under load. Our mechanical extensometer comprises of two long knife edges at top, two indicators and lower knife edges to actuate the dials. The bars are pressed against the specimen by means of clamps to ensure that the knife edges bite the specimen to avoid any slip. The under edges are adjustable to provide different gauge lengths for measurement. As deformation takes place the lower knife edges transfer the movement to the dial gauges and the deformation of specimen is shown on dials, so that the change in length of specimen by 1/100 mm. Equals to one division of the graduation of dial.