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

Description: 6pcs 8-150mm Telescopic Gauge Set Micrometer Measurement Bore Engineers Kit Specifications: Material: Hardened tool steel Color: Silver Size: As pictures shown Usage: Under uniform spring tension, the plunger of the gage expand from the center to the diameter of the hole or width of slot being measured and 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 finished Package Included: 1x 6pcs Telescoping Gages More Details: