NPL Certified Stage Micrometer- 0.01 mm/100 division

SKU: 314S8CERT

NPL certified transmitted light stage micrometer

$1200.00

Each certified stage micrometer is measured in selected intervals using a microscope with a traveling stage. The displacement of the stage is measured by means of a helium-neon laser interferometer, with the frequency of the laser having been determined using an iodine-stabilized reference laser. The expanded uncertainty in the interval measurements is +/- 0.0005 mm. The uncertainties are for a confidence probability of not less than 95 %. Please call for pricing and delivery information.

The primary use of a stage micrometer is to calibrate eyepiece measuring reticles by making a direct comparison of the arbitrary rulings in the eyepiece reticle to known spacings on the stage micrometer. 

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