Gap Gauge

S.G. Prittie manufactures solid gap gauges to suit your application, these gauges are particularly suited to tight tolerances. We also supply adjustable gap gauges that can be set to your dimensions. Adjustable gap gauges are available with various anvil forms. All of our gauges are made from hardened tool steel to ensure long life and are supplied with a manufacturers certificate of conformance (COC).

Product options

Solid Type
Design to suit your product
NATA Calibration – ISO 17025
Storage case

Adjustable Type
Go/Nogo dimensions set in our laboratory
Anvils can be modified to suit
NATA Calibration – ISO 17025
Storage case

Applicable standards

AS 1997 or Customer Specification

Why this product is used

Gap gauges are an efficient way to check an external diameter conformance. Simply check that the Go gauge will engage the part and that the Nogo gauge will not enter. This condition indicates a conforming part.

  • Customisation

    Customisation is offered on most gauges. We can add a new feature to a standard gauge, manufacture a revised design based on a standard gauge, or design a new gauge to suit your application.

  • Support

    We offer design and technical support for all our gauges, as well as support for measurement and calibration inquiries. Contact us via phone or email.

  • Delivery

    We offer express or economy delivery and can send products to local, interstate and overseas locations. We’re also happy to use your own delivery supplier.

  • Manufacturing

    We are an Australian business located in Airport West Victoria. Quality is a priority and we have ISO 9001 and ISO 17025 management systems in place.


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Gauge type Range in stock Range manufactured
Solid Gap Gauge Made to order Up to 300mm or 12”
Adjustable Gap Gauges
C Type Up to 300mm or 12”
U Type Limited Stock - Call
A Type Limited Stock - Call
B Type Limited Stock - Call


What are the pros and cons of a gap gauge?


Very quick way to gauge an external diameter or groove.

Ability to gauge long shafts quickly, no need to slide on a ring gauge.

Can measure between shoulders.


Diameter is only checked at two points, roundness is not checked.

How often do I need to calibrate my gauge?

There is no fixed time, calibration frequency is based on how often the gauge is used and the conditions that the gauge is exposed to. Frequent use and abrasive materials will require more frequent calibration, low use in a clean environment will allow less frequent calibration. Usually the user determines the calibration frequency.

Can a gauge be made to my own specification?

Yes, we can design special gauges for your manufacturing process.


If you need assistance selecting the correct gauge or have technical questions please contact us.

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