Inspection plate / test platform Uses: suitable for a variety of inspection, precision measurement of the reference plane; mechanical testing benchmarks for machine tools; checking the dimensional accuracy of parts or geometric deviation test platform Material: made of high-strength cast iron HT200-HT300 manufacturing, face hardness: HB170-240. test platform used to check the dimensional accuracy of parts or geometric deviation, and as crossed, for a variety of inspection, precision measurement reference plane. test platform to conduct in use installation and commissioning, and then test platform face clean, no problem in identifying the circumstances under which, during use, to avoid artifacts and flat face with excesses of the collision, to prevent damage to the test platform's face; workpiece weight can not exceed the rated load test platform, otherwise it will cause lower quality of work, damage to the flat structure, and even cause plate deformation, so that can not be used. surface quality inspection test platform uses color method test. inspection standards: plate on each side 25 mm square within less than 25 points, two less than 20 points, three less than 12 points. Inspection Platform Precision: According to the national standard verification procedures, namely 0,1,2,3 grade four level. Inspection Platform Material: made of high-strength cast iron HT200-HT300 manufacturing, face hardness: HB170-240. Inspection Platform Specification: (special specifications according to the demand side, drawing production or agreed upon production and processing)