Ceramic check master 1. It is used to inspect the indication error of general calipers for inside and outside measurement. Advanced and rational checkout is closed to current international methods, which not only accords with national standards, but also accords with iso (international standardization organization) and din (deutsche industrie normen). 2. It is designed to check the fixed accuracy of numerical control machine tool, machining center and three-dimensional measuring machine to make adjustment accordingly (error compensation), which improves the precision of machining. 3. It is can be used both in horizontal & vertical directions. Range order no. Type permissible error 12 300mm 022-153 ceramic +/-2.0um +/-4um 500mm 022-155 +/-2.5um +/-5um 600mm 022-156 +/-3.0um +/-6um Trademark: anyi Model: 022-153 Productivity: 200 Unit price/payment: t/t in advance