Machifit 4pcs 3-13mm Hole Precision Gauge Full Ball Type Small Telescoping Gauge Tool Set Hole Bore

Description:
4pcs Full-Ball Small Bore Hole Precision Gage Gauge Set Telescoping Full Round Spherical Shaped Hardened Bore Gauge

Specification:

Material	Carbon steel
Surface treatment	Nickel plating
Measuring range	3-13mm (1/8-1/2)
Quantity	4pcs

Type	A	B	C	D
Measuring range (Inch)	1/8-1/5	1/5-3/10	3/10 -2/5	2/5-1/2
Measuring range (mm)	3-5mm	5-7.5mm	7.5-10mm	10-13mm
Head diameter	5mm	5mm	5mm	5mm
Ball diameter	3mm	5mm	7.5mm	10mm
Length	76mm	79mm	88mm	92mm

Features:
Used with an outside micrometer for measuring inside diameter of bores. Extra long for gaging deep and shallow holes, slots and similar work pieces. Gaging surface is fully hardened to insure long tool life. 4 sizes of gages are supplied in a fitted case. Spherical measuring faces hardened, tool adjustment shaft satin chrome finish. Tail with locking device. Tighten clockwise and loosen when counterclockwise. Instructions: A spring piston that telescopes in the bore enables internal diameter detection, which is measured with a micrometer or caliper. (Knurled locking device at the end.)

Using method: 1. Loosen the inner hole gauge and place it in the object to be measured. 2. Tighten clockwise and make one rotation to ensure tightening. 3. After the measurement is correct, tighten the lock clockwise. 4. After locking, measure the inner diameter data with a caliper.
Package Included:
4 x Hole Precision Gauge

More Details: