What is the Mitutoyo 155-905 telescoping gage set used for?

You use it to determine the internal diameters of bores, cylinders, and grooves in combination with an outside micrometer.

What measuring range does this set cover?

The 6 gages cover a range from 8 to 150 mm (8–12.7 mm, 12.7–19 mm, 19–32 mm, 32–54 mm, 54–90 mm, and 90–150 mm).

How does a telescoping bore gage work?

The spring-loaded plungers expand inside the bore, are locked in place with the knurled clamp, and are measured with a micrometer.

Which individual gages are included in the set?

The set includes 6 gages (155-127, 155-128, 155-129, 155-130, 155-131, and 155-132) supplied in a fitted plastic pouch.

Can you read the measurement directly from the gage?

No, telescoping gages are transfer tools. You must measure the locked gage with an outside micrometer to get the reading.

MITUTOYO 155-905 telescopic jig set 8-150mm in plastic storage case 6-piece

Name: MITUTOYO 155-905 telescopic jig set 8-150mm in plastic storage case 6-piece
Brand: MITUTOYO
SKU: 41985391
Price: 340.4 EUR
Availability: PreOrder

Supplier number: MITUTOYO 155-905 | EAN 4946368023632

340.40 tax incl.

€281.32 excl. VAT (incl. all environmental contributions)

On order: delivered from 10/10/2026

set

Delivery by DHL

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Accurate internal measurements with Mitutoyo

Practical benefits

Comprehensive inside measuring range: Six telescoping gauges let you measure internal bore diameters and groove widths from 8 to 150 mm.
Uniform spring loaded contact: The spring-loaded plungers expand evenly against internal walls to provide consistent and repeatable positioning.
Secure knurled clamp locking: You can lock the expanded plungers instantly with the knurled knob for precise measurement transfer.

In a nutshell

The right choise for

With the Mitutoyo 155-905 telescoping gage set, you can quickly and accurately determine the inside diameters of bores, cylinders, and grooves from 8 to 150 mm. The spring-loaded plungers expand smoothly against the internal walls of your workpiece, allowing you to lock the exact position with the knurled clamp. You then measure the transferred dimension with an outside micrometer for precise readings. Containing six gages (155-127 through 155-132) organized in a fitted plastic pouch, this set gives you the versatility you need for machining and quality inspection.

Product information FAQ

€340.40

tax incl.

Key features according to our expert

Caliber type: Plug gauge

Product description:

Self-centering and satin chrome finish.
Constant spring force on to the measuring surface. Locked in position by knurled lockscrew.

All Features

Caliber type: Plug gauge

Brand MITUTOYO
41985391
EAN 4946368023632
Supplier number MITUTOYO 155-905

Frequently asked questions about this product

Answered by specialists

What is the Mitutoyo 155-905 telescoping gage set used for?: You use it to determine the internal diameters of bores, cylinders, and grooves in combination with an outside micrometer.
What measuring range does this set cover?: The 6 gages cover a range from 8 to 150 mm (8–12.7 mm, 12.7–19 mm, 19–32 mm, 32–54 mm, 54–90 mm, and 90–150 mm).
How does a telescoping bore gage work?: The spring-loaded plungers expand inside the bore, are locked in place with the knurled clamp, and are measured with a micrometer.
Which individual gages are included in the set?: The set includes 6 gages (155-127, 155-128, 155-129, 155-130, 155-131, and 155-132) supplied in a fitted plastic pouch.
Can you read the measurement directly from the gage?: No, telescoping gages are transfer tools. You must measure the locked gage with an outside micrometer to get the reading.