ردیف اول: CERA Caliper Checker, 0-600mm, Item number: 515-556-2, Reference checking lengths available for outside/inside measurement 20, 50, 100, 150, 200, 250, 300, 350, 400, 450, 500, 550 , 600, block pitch accuracy: ±0.007 mm, Parallelism of blocks: 0,004mm