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1. Corner units
In addition to the radian and its submultiples, the most common units are :
the revolution: 1 revolution = 2π rad ;
degree (°): ;
per minute (′): ;
the second (′′):
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Corner units
Connection diagram and national references
Bibliography
Standards and norms
French Standards Association (AFNOR)
- Measuring instruments – Steel brackets. - NF E 11-103 - 1983
- Instruments de mesurage des angles. Généralités. - NF E 11-300 - 1986
- Instruments de mesurage des angles. Niveaux à bulle. - NF E 11-301 - 1984
- Instruments de mesurage des angles. Niveaux électroniques. - NF E 11-302 - 1984
- Instruments de mesurage des angles. Autocollimateurs. - NF...
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Manufacturers – Suppliers – Distributors
AG Davis – AA Gauge (divider plate)
http://www.agdavis-aagage.com/a_rotary_tables.htm
Brown and Sharp TESA (corner shims)
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Websites
BIPM: Calibration and measurement capabilities: CMCs (Appendix C) http://kcdb.bipm.org/appendixC
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