Optional extension rods are available to measuring deep hole with accuracy
The exact zero adjustment is made by turning the knurled knob on the rear panel
000 lbF capacities)
Optional extension rods can be attached for measuring inside deep holes
including a Vision Unit
Mitutoyo Inside Micrometer Checker 25-300mm 515-585 CAL1 B3 Optional extension rods are availableThis Inside Micro Checker offers you the following benefits: Applicable for Series 133, 139 and 145 (over 50 mm). Not applicable for Series 137, 141, 337 and 339 It designed to act as a setting standard for inside micrometers. It comes with ceramic gauge blocks. Features Range: 25 300 mm Graduation: 25 mm Inch Metric: Metric Reference length : 25, 50, 75, 100, 125, 150, 175, 200, 225, 250, 275, 300 mm Block pitch accuracy: (1+L 150) m L = Length to