1.金屬罩殼 Metal housing. 2.用于內(nèi)尺寸、外尺寸、深度尺寸及臺階尺寸測量 Can measure OD,ID,depth and step. 3.讀數(shù)直觀 Easy proof. 4.整體機(jī)芯,雙向防震 Shock proof. 5.測量范圍200mm以上卡尺帶微動滾輪 With thumb roller for range 200mm or more.