1.用于內尺寸、外尺寸、深度尺寸及臺階尺寸測量 Can measure OD,ID,depth and step. 2.讀數直觀 Easy proof. 3.整體機芯,雙向防震 Shock proof. 4.測量范圍200mm以上卡尺帶微動滾輪 With thumb roller for range 200mm or more. 5.具有公制、英制產品供選擇 Metric and inch caliper can be optional.