产品特点可进行内径尺寸的测量测量柱分合金钢和硬质合金两种技术参数货号测量范围分度值精度452-1055-30mm0.01mm 0.005mm452-11025-50mm0.01mm 0.006mm452-11550-75mm0.01mm 0.007mm452-12075-100mm0.01mm 0.008mm452-2050.2-1.2 0.001 0.00025 452-2101-2 0.001 0.0003 452-2152-3 0.001 0.00035 452-2203-4 0.001 0.004