6pcs 8-150mm Telescopic Gauge Set Micrometer Measurement Bore Engineers Kit

Description 6pcs 8 150mm Telescopic Gauge Set Micrometer Measurement Bore Engineers KitSpecifications Material Hardened tool steelColor SilverSize As pictures shownUsage Under uniform spring tension the plunger of the gage expand from the center to the diameter of the hole or width of slot being measuredand then locked in place by a knurled knob the hole size is found by measuring over the two contact point with a micrometer or caliper Features Double action rigid handle with self centering feature for quick checking of holes slots and recess up to 6 inch deep The ends of both contact are head treated stainless steel and precision ground to a radius to allow proper clearance on the smallest hole the gage will enter Constant spring tension gives uniform contact pressure Handles are rigidly attached to the contact plungers and are automatically self centering Nickel plated finishedPackage Included 1x 6pcs Telescoping GagesMore Details