Product Application:

Stark 6 piece Telescopic Gauge Caliper Set features a double action rigid handle with self centering for quick checking of holes, slots and the ends of both contacts are heat treated, satin chrome finished stainless steel and precision ground to a radius to allow proper clearance on the smallest hole the gauge will enter recesses up to 6" deep.
The constant spring tension gives uniform contact pressure

Range: 5/16" - 6" (8mm to 150mm), 6 pc 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
 

Specification:

Spring loaded with locking knurled knob
Stainless Steel Construction
Gage expands in a hole to be measured (locks in place and then removed to determine final hole size using a micrometer or calipers).
Get exact sizes of holes, slots, bores, or recesses
Rigid handle and double action design (self-centering) for quick checking of inside measurements
Constant spring tension for uniform feel
Contact points are hardened tool steel and precision ground in the end measuring radius

Package Includes:    

6 x Telescoping Gage Set

1 x Pouch

As shown in the picture

Note:

A minor difference in model design may result in a different model.

Please carefully check if the pictures match with your model