Telescopic Telescoping Precision Minimeter Measurement Review

【Easy to Adjust】This telescopic bore gauge set allow the most pinhole gauge on the retractable gauge to enter, can quick check holes, slots and recess up to 6" deep. 【Bore Gauge Material】 The bore gauges are made of carbon steel with chrome plating on the surface.Telescoping Gage Set has nickel-plated finished and good side arc so that the product has a long service life. 【Bore Gage Packing】Total 6Pcs cylinder bore gauges in a ethylene plastic bag, range: 5/16" - 6" (8mm to 150mm), (1 gage: 5/16 - 1/2" range x 4.20" overall; 1 gage: 1/2 - 3/4" range x 4.40" overall; 1 gage: 3/4 - 1-1/4" range x 4.40" overall; 1 gage: 1-1/4 - 2-1/8" range x 5.85" overall; 1 gage: 2-1/8 - 3-1/2" range x 5.85" overall; 1 gage: 3-1/2 - 6" range x 5.85" overall). 【Peration Method】 Use the small hole gauge to expand in the hole to be measured, lock it in place, and then take it down, and measure with bore micrometer or caliper to determine the final hole size. 【Unique Design】 The spring tension of bore measuring tool ​gives uniform contact pressure, can detect the inner diameter in a hole (or groove).Spring of telescopic gauge loads with knurled locking knob and knurled holding area.