The electronic extensometers made according to resistance strain principle. It has legerity structure, good stability and easy to operate. Have became the essential sensor for strain automatic testing and been widely used in various academies, scienti......
GWB-200JA calibration instrument for extensometer is a sort of pure mechanical instrument to determine the displacement, deformation or extension. It is specially used for the calibration of various extensometers, and also widely used for the verifica......