Granite Surface Plate By Ntmt Metrology

We manufacture, export and supply Granite Surface Plate to our customers in Hosur, Tamil Nadu, India. NTMT Granite Surface plate are very lowest thermal co-efficient of expansion,grater strength,100% rust proof.It may chip but not develop a burr,nonmagnetic,non-conductive,easy clean,three times harder than that of cast iron surface plate.built in accuracy of flatness over years.NTMT Grainte surface plates acrystalline rock has made from selected graintes with uniform distribution of dark and light constituents.Some of the physical properties of granites are 6 to 6.5 more scale hardness, fine grind texture,3.08specific gravity,2 to 5*10-6 kA thermal co-efficient of expansion.
NTMT Grainte surface plates are meets to is is specification and tolerances,surface plate are inspection and tolerancs,surface plates are inspected under laboratory atmosphere conditions,final inspection carried out by high precision electronic level with computerized software methods.
NTMT surface plates are of a manufactured in four grades Accuracy.Namely Grade 00,0,I,II,III.The flatness deviation of a local area of 250*250mm of working surface shall not exceed 3.0Aum of Grade 0,7.0Aum of Grade I,15.0Aum of Grade II.
Calibration Certificate is supplied with each plates as per Is Specification.We offer bigger size of granite surface plate with extra thickness,Granite surface plates with T slots,granite comparator stand,insert with drilled and tapped holes.