Mechanical, famous Deformometro also like removable extensometer, is an apt measuring instrument in order to estimate amplitude variations (relative movement) between two points, with order of magnitude of thousandth of millimeter.
This instrument, fort of its reliability and repeatability of the measures, find its greater application in the operations of monitoring of the fessurativi pictures or in the tests of deformability with the employment of jacks plates.
Technical characteristics
Deformetro the mechanic is constituted from a bar or metal pipe to the whose extremities are mounted two studs, orthogonal ones to the main axis of the pipe, fortified of conical drill bits. One of these studs is fixed, while the other, mounted on device of mechanical sliding, is free to oscillate along the main axis of the instrument, with race that vary between ±2.5 and ±5 milimeter (DL=L1-L0).