Opus Metrology

Precision Balls

Set of Opus precision balls

Calibrated precision balls are used in a wide range of applications including in the measurement of small internal tapers, internal annular grooves and throated worm wheels.

Each standard set of balls contains a range of sizes, with three matched balls per size.  The main features of Opus precision balls are as follows:

  • Manufactured from High Carbon Chrome Steel (AISI 52100-EN31)
  • Available in metric and inch sizes
  • Metric range 1 to 25mm or 1.5 to 12.5mm each in 1mm steps
  • Inch range 1/16 to 1/2 inch in 1/32inch steps or 9/16 to 1inch in 1/16inch steps
  • Special combination sets available
  • Individual sizes available
  • Different materials available

All Opus balls can be supplied with UKAS (United Kingdom Accreditation Service) calibration certificate, please ask for details. You can view our UKAS accreditation schedule here.



Opus Metrology
Corby NN17 4DR
t: +44(0) 1536 204681
f: +44(0) 1536 205272
e: sales@opus.co.uk
Opus Metrology is the trading name of Thomas Salvesen Enterprises Ltd

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