The NPL, the UK's National Metrology Institute, is a world-leading centre of excellence in developing and applying the most accurate measurement standards. NMIs throughout the world mutually recognise international measurement standards and calibration certificates, including EUROMET, APMP (Asia Pacific) and SIM (Canada & USA). Each NPL-certified micrometer is permanently marked with an individual reference number, and is supplied in a baize-lined wooden box.
AGL4079 Stage micrometer, 1mm scale, 0.01mm sub-divisions, line width 2µm (+0.1µm), accuracy <1µm overall
AGL4081 Stage micrometer, 10mm scale, 0.1mm sub-divisions, line width 5µm, accuracy <2 µm overall