What is the Mitutoyo 177-146 setting ring used for?

It is used for the precise zero-setting and calibration of inside micrometers, Holtest internal micrometers, and bore gauges.

What is the nominal inside diameter of this setting ring?

The nominal inside diameter is 50 mm. The exact calibrated actual size is marked directly on the ring.

What are the outer dimensions of this steel ring?

The ring has an outside diameter of 85 mm and a thickness of 20 mm.

What material is this setting ring made of?

This setting ring is made of high-quality steel.

MITUTOYO 177-146 steel adjustment ring - 50mm

Name: MITUTOYO 177-146 steel adjustment ring - 50mm
Brand: MITUTOYO
SKU: 41988063
Price: 204.95 EUR
Availability: PreOrder

Supplier number: MITUTOYO 177-146 | EAN 4946368038391

204.95 tax incl.

€169.38 excl. VAT (incl. all environmental contributions)

On order: delivered from 17/10/2026

Ordered before 20:00 - delivered as of 17/10/2026
Free shipping
Delivery by DHL
Delivered from Belgium

✆ Talk to a specialist

Precise calibration for internal micrometers

Practical benefits

Steel setting ring 50 mm: You quickly and accurately zero inside micrometers and bore gauges for reliable internal diameter measurements.
High roundness and stability: Exceptional cylindrical accuracy ensures you always work from a true dimensional standard without deviation.
Durable hardened steel construction: The durable steel build maintains dimensional stability over extended daily use in the workshop.

In a nutshell

The right choise for

With the Mitutoyo 177-146 steel setting ring with a 50 mm nominal diameter, you quickly and accurately zero and calibrate your internal measuring equipment. Suitable for inside micrometers, three-point internal micrometers, and bore gauges, this reference standard prevents measurement errors and calibration drift in precision machining workshops and metrology laboratories. The high cylindrical accuracy and marked actual size ensure dependable measurements every time. Built from durable hardened steel with an 85 mm outside diameter and 20 mm thickness, it delivers lasting dimensional stability for demanding daily inspection tasks.

Product information FAQ

€204.95

tax incl.

Key features according to our expert

Inner diameter: 50 mm

All Features

Inner diameter: 50 mm

Brand MITUTOYO
41988063
EAN 4946368038391
Supplier number MITUTOYO 177-146

Frequently asked questions about this product

Answered by specialists

What is the Mitutoyo 177-146 setting ring used for?: It is used for the precise zero-setting and calibration of inside micrometers, Holtest internal micrometers, and bore gauges.
What is the nominal inside diameter of this setting ring?: The nominal inside diameter is 50 mm. The exact calibrated actual size is marked directly on the ring.
What are the outer dimensions of this steel ring?: The ring has an outside diameter of 85 mm and a thickness of 20 mm.
What material is this setting ring made of?: This setting ring is made of high-quality steel.