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5. Conclusions
As this article demonstrates, dimensional metrology is based on a large number of standard measuring instruments. The wealth of these means should enable the right choice of instrument to be made, depending on the criteria to be measured and the shape of the part. When inspectors use these instruments, it's not knowledge of the equipment that introduces measurement errors or uncertainties. It is very often an error in the choice of measuring equipment, and a total ignorance of the causes of uncertainty. The exhaustive description of these instruments, with their error limits and precautions for use, as well as the inventory of the causes of uncertainty in paragraph
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Conclusions
References
Standardization
Association française de normalisation AFNOR
- Spécification géométrique des produits (GPS). Comparateurs à levier mécaniques. Spécifications. Méthodes d'essais. - XP E 11-053 - Déc. 2000
- Instruments de mesurage de longueur. Comparateurs mécaniques à cadran, à tige rentrante radiale. Spécifications. Méthodes d'essais. - NF E 11-050 - Déc. 1990
- Spécification géométrique des produits (GPS). Comparateurs...
Manufacturers
Vernier calipers, sliding depth gauges :
Roch Lunéville France, Brown and Sharpe Group
TESA (Switzerland), Brown and Sharpe Group
Etalon (Switzerland), Brown and Sharpe Group
Sylvac (Switzerland): digital calipers
Mahr (Germany)
...
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