Mitutoyo 155-905 Telescoping Gage Set 6 Piece

Product Description

The MITUTOYO 155-905 is a six-piece telescoping gage set used to measure internal diameters, bores, and slots with accuracy and repeatability. Each gage in the set features a spring-loaded telescoping contact that locks at the measured dimension, allowing transfer of the measurement to an outside micrometer or caliper. The set is constructed from steel for durability under regular shop use. Measurement range spans from 8 millimeters at the minimum to 150 millimeters at the maximum, covering a wide range of bore sizes encountered in machining, engine work, and mechanical assembly applications. Precision layout and dimensional inspection professionals rely on this set for reliable bore transfer measurements.

This telescoping gage set is suited for use in machine shops, maintenance facilities, and engine rebuilding environments where internal bore measurement is required. The six gages in the set cover progressively larger diameter ranges, making the kit practical for technicians working across a variety of component sizes without switching tool sets. The minimum overall handle length starts at 1 inch, allowing access into shallow bores and counterbores. The set is appropriate for machinists, millwrights, and mechanical technicians performing dimensional inspection or component fitting tasks.

Key Features

• Six-piece set covers an internal measurement range from 8 millimeters to 150 millimeters
• Steel construction provides durability for repeated shop use
• Spring-loaded telescoping contacts lock at the measured dimension for accurate transfer measurement
• Minimum overall length of 1 inch allows access to shallow bores and recessed features
• Set format reduces the need for multiple individual gages across common bore size ranges

Compatibility

Designed as a standard telescoping gage set for use with outside micrometers or calipers to complete internal bore measurement across residential and industrial maintenance and machining applications.

Installation Notes

Telescoping gages are installed by a machinist or mechanical technician and require no permanent mounting. Before use, ensure all contact surfaces are clean and free of burrs or debris that could affect measurement accuracy. The locked gage should be measured with a calibrated outside micrometer or vernier caliper. Handle the set with care to avoid dropping or impacting the gages, which can affect calibration and contact alignment.