GD Instruments Services delivers complete, accurate and traceable calibration — in our Nashik laboratory and on your site. Serving 900+ clients across India since 1996.

From vernier calipers to 2500-bar pressure gauges, torque wrenches to precision balances — our accredited scope spans mechanical, dimensional, pressure, force, flow and speed. We also offer third-party electrical & thermal calibration.
Calipers, micrometers, gauges, height & depth, threads, slip gauges, surface plates, VMM.
Gauges, calibrators, transmitters, manometers, vacuum — hydraulic & pneumatic to 2500 bar.
Torque wrenches Type I & II, all classes, screwdrivers, meters & tools per ISO 6789.
Pneumatic, electric, hydraulic & oil-pulse torque tools and DC nut runners per ISO 5393.
Push-pull, tension & compression gauges and load cell indicators per VDI/VDE 2624.
Electronic balances, precision weighing scales and standard weights per OIML R 76-1 & R 111.
Anemometers, air-velocity & flow meters, pitot tubes, contact & non-contact tachometers.
Zahn, Ford, flow & viscosity cups by timed efflux per IS 3944, ASTM D 1200 and ISO 2431.
Shore A, D, AO & AM hardness testers and dial / digital durometers per ISO 48-9.
Can't move the instrument? Our engineers calibrate at your facility with full traceability.