Granite surface plate 430190 series

Specially selected natural granite. Free from defects, homogeneous structure. Resistant to deflection and to warping. Absolutely rust-proof and acid resistant, low thermal conductivity. Micro-fine machine surface (diamond lapped). Within all the permissible tolerances. Ground outside edges, visually true. For static determination of position, contact points (steel ball inserts) are fitted to the underside. Harder than hardened steel (Mohs hardness scale 6 − 7), non-magnetic and electrically non-conductive. Accuracy: Final manufacturing and inspection take place in computer-controlled climatic rooms. The used measuring equipment guarantees the exact connection to national and international calibration laboratories. DIN 876/0 − Precision diamond lapped for inspection. Supplied with: Supplied with test certificate, transport packing.