A FLATBED SCANNER AS A PLATFORM FOR CALIBRATING LINE SCALES

Vukan Ogrizović, Stefan Miljković, Siniša Delčev, Jelena Gučević

Abstract

In the Metrological laboratory for angle and length calibration, we are developing a new procedure for calibration of line scales. The line scale is scanned with a standard computer flatbed scanner. Distances between the lines on the scale are calculated as a product of measured number of pixels and the scale factor expressed in pixels per mm, while the scale factor is determined by a laser interferometer. The results show that this procedure complies with the accuracy requirements.

Keywords

line scale, flatbed scanner, laser interferometer, calibration, fitting

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IMEKO-WC-2015-TC14-307.pdf

DOI

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IMEKO TC

TC14 - Measurement of Geometrical Quantities

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