All you need to know about Calibration

Now available for download, our FAQ on Calibration. A document identifying all the main questions on calibrating your micrometer scales, long scales, calibration slides and grids, including:

  • Do I need to calibrate my Stage Micrometer (or Long Scale/Grid)?
  • What is the difference between a S-type & PS-type Stage Micrometer?
  • How often is calibration required?
  • What Certificate should I have?
  • What’s the difference between a UKAS and NPL Certificate?
  • Can I have a certificate of calibration on an Eyepiece Reticle?
  • Where can I re-calibrate my Stage Micrometer, Long Scale or Grid?
  • How long does it take to calibrate my Stage Micrometer, Long Scale or Grid?
  • Can I expedite my Calibration?

If you need to re-calibrate your slides or wish to discuss about custom calibration measurements, email us directly at or call our team +44 (0)1732 360460.