Telescopic Gauge

Telescopic gauges are popular for fine work as they are very rigid and have a better ‘feel’.

Telescopic Gauge Uses

Used for measuring the sizes of holes, slots and recesses

Construction of Telescopic Gauge

Telescopic Gauge
Telescopic Gauge

Telescopic gauges are ‘T’ shaped. They consist of a pair of telescopic legs or plungers connected to a handle. The plungers are spring-loaded to force them apart. After inserting the gauge in a hole or slot, it can be locked in position by turning the knurled handle. It may then be withdrawn from the hole and measured with a micrometer.

Telescopic Gauge Parts
Telescopic Gauge Parts

Telescopic gauges are available in a set of 6 nos, to measure holes from 8 mm to 150 mm. (as per MITUTOYO Series 155)

Telescopic Gauge Use
Telescopic Gauge Use

No.1 8.0 mm to 12.7 mm
No.2 12.7 mm to 19.0 mm
No.3 19.0 mm to 32.0 mm
No.4 32.0 mm to 54.0 mm
No.5 54.0 mm to 90.0 mm
No. 6 90.0 mm to 150.0 mm

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