6 Pcs 516 to 6 Telescopic Gauge Bore Gauge Telescoping Gage Set High Precision TBore Hole Gauge Minimeter Measurement Bore

? Range: 5/16" - 6" (8mm to 150mm), 6 pc Telescoping Gage Set includes: ? 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. ? Spring of telescopic gauge loads with locking knurled knob. ? This telescopic bore gauge can make you get exact sizes of holes, slots, bores, or recesses. ? The telescopic bore gauge expands in a hole to be measured (locks in place and then removed to determine final hole size using a micrometer or calipers). ? Contact points of telescopic bore gauge are hardened tool steel and precision ground in the end measuring radius.