Mercury Tool & Gauge – Leading Supplier of Gauging and Machining Tools


We are Mercury Tool & Gauge Ltd, based in Coventry UK; established in 1991 after the closure of Haycock Gauge & Tool. Following the same traditions we are committed to providing the best quality products and services to all our customers.

We supply a wide variety of precision gauges from screw thread to gap gauges. In addition to these products we also stock a variety of cuttings tools and taps. As one of the leading suppliers of these products we have customers across the UK as well as across the globe.


Mercury is very proud of our heritage and continues to provide support to the manufacturing and supply of precision products across a wide variety of industries including Aerospace, Oil, Pharmaceutical and Automotive.

Uniquely concentrating on both taps and precision thread gauges Mercury offers a complete solution to your machining and gauging needs. Mercury supply an extensive range of products that are manufactured to meet the most demanding quality needs in today's market.

Our Best Sellers

Screw Thread Gauges : These are manufactured in accordance with British Standards, ANSI /ASME and ISO standards and a wide range of National and customer supplied standards . We can supply a wide range of thread forms and classes (including ISO Metric, Unified, BA, Buttress, ACME, BSP (G Series), BSPT, NPT & NPTF), internal and external gauges, with fully traceable in-house certificates. UKAS certificates to ISO 17025 are also available upon request.

Special Gauging & Gauging Fixtures : We offer a range of high quality special fixtures products, from plain ring and precision length gauges to bespoke gauging fixtures to customer's designs.

Simply contact us for a quotation or for any technical assistance required.


Gauging for Anaesthetic & Respiratory Equipment

We are a supplier of Gauging for Anaesthetic & Respiratory Equipment including gauging requirements to satisfy ISO 5356-1:2015.

Mercury Tool and Gauge


Industries Served

  • Aerospace
  • Automotive
  • Autosport
  • Avionics
  • Environmental Services
  • Medical
  • Military
  • Mining
  • Robotics
  • Security
  • Telecoms

About Mercury

Mercury Tool & Gauge offer an extensive range of products that are manufactured to meet the most demanding quality needs in today's market.


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  • Phone:
    +44 (0)2476- 694 -030
  • Fax:
    +44 (0)2476- 694 -070
  • Email:

  • Address:
    Mercury Tool & Gauge
    221 Torrington Avenue
    CV4 9HN

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