Extensometer calibrator GWB-200JA

GWB-200JA Calibration instrument for extensometer is a sort of pure mechanical instrument to determine the displacement, deformation, or extension. It has high precision. According to JJG762-92 V.R. of extensometer, it is specially used for the calibration of various extensometers, and also widely used for the verification of displacement sensors and dial gauges (reading in 0.01mm and 0.001mm). This instrument can custom-tailor and lengthen the gauge length but with changeless performance and precision. Key Specification: Gauge length range L max. : 500mm Diameter of arms mounting hole: φ10mm; φ28mm Axial scale of differential gauge inner readout: 0.5mm/div Vernier scale of differential gauge inner readout: 0.0002mm/div Circumference scale of differential gauge outer readout: 002 mm/div Measuring range less than 0.5mm≤0.5um(absolute error) Measuring range more than 0.5mm≤0.10%(points relative error)