440Z-6RL美国施泰力深度千分尺440和445系列深度千分尺产品编号测量范围测杆数量分辨率特点440MZ-75RL0-75mm30.01mm 440系列基面尺寸为63.5mm(21/2〞),测杆直径为3.2mm(1/8〞) 445系列面尺寸为100mm,测杆质径为4mm440MZ-150RL0-150mm60.01mm440MZ-225RL0-225mm90.01mm440Z-3RL0-3〞30.001〞440Z-6RL0-6〞60.001〞440Z-9RL0-9〞90.001〞445MBZ-75RL0-75mm30.01mm445MBZ-150RL0-150mm60.01mm445MBZ-225RL0-225mm90.01mm