Medical Gauges

S.G. Prittie manufactures a range of tapered plain plug and ring gauges to ISO 594 and ISO 5356. Variations to standard gauges can be made to suit particular products that have clearance issues with standard gauges. All of our gauges are manufactured from hardened stainless steel with all gauging surfaces ground to ensure high accuracy. All gauges are supplied with an ISO 17025 calibration report.

Product options

Design to suit your product
Special blank dimensions available
Storage case

Applicable standards

ISO 594
ISO 5356

Why this product is used

Tapered plain plug and ring gauges are used to check diameter at a reference length. Steps on the gauge indicate a tolerance band. If the end face of the part is between the max. and min. steps 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 Available Range Stocked
ISO 5356/1 8.5, 11.5, 15, 22, 23 & 30 Made to order
ISO 594/1 Made to order Made to order


Can a gauge be made to my own specification?

Yes, we can design special plain plug and ring gauges for your products.

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.

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

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