Telescopic Gauge Ball Head

Used with an outside micrometer for measuring inside diameter of bores.

Telescopic Gauge

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

? Measuring Range 3-13mm (1/8"-1/2")

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.

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.