公制型 测量范围 货 号 分辨率 精度 0-25mm 293-230/293-240* 0.001mm ±1um 25-50mm 293-231/293-241* 0.001mm ±1um 50-75mm 293-232/293-242* 0.001mm ±1um 75-100mm 293-233/293-243* 0.001mm ±2um 100-125mm 293-250 0.001mm ±2um 125-150mm 293-251 0.001mm ±2um 150-175mm 293-252 0.001mm ±3um 175-200mm 293-253 0.001mm ±3um 200-225mm 293-254 0.001mm ±3um 225-250mm 293-255 0.001mm ±4um 250-275mm 293-256 0.001mm ±4um 275-300mm 293-257 0.001mm ±4um