1.量面鑲裝硬質(zhì)合金,更具耐磨性 With carbide measuring faces,more wearable. 2.200mm以上規(guī)格可帶微動(dòng)滾輪 With thumb roller for range 200mm or more. 3.可進(jìn)行外尺寸、內(nèi)尺寸、深度尺寸及臺(tái)階尺寸測(cè)量 Can measure OD,ID,depth and step.