The fitter tablet Material: HT200-300. Face hardness HB170 ~ 210, after two aging treatment (artificial aging and natural aging for 2 to 3 years). The accuracy of the product is stable and wearable. Cast iron plate, platform inspection and mechanical parts flat, parallelism, perpendicularity, angle, straightness and other geometric tolerance benchmarks are generally used for the test workpiece, precision parts crossed, grinding, processing technology and crossed, inspection, measurement, testing, welding, assembly and use. Accuracy of 0-3; JB/T7974-1999 and manufactured according to national standards; accuracy class implementation of the National Institute of Standards Metrology and Verification JJG117-91. 

 Specifications: 

 The ① 100mm × 200mm - 400mm × 400mm (This specification applies to the grinding pressure sand flat) accuracy of 00, 0, 1 

 ② 400mm × 600mm - 1000mm × 1500mm (This specification applies to artificial scraped tablet) precision of 0, 1, 2 

 ③ 1000mm × 2000mm - 2000mm × 4000mm (This specification is applicable in tablet artificial scraping) an accuracy of 1, 2, 3 

 ④ 2000mm × 5000mm - 3000mm × 8000mm accuracy of three fine planing, greater than the above specifications can be assembled