5. Special applications
The main distinctions are :
single-race measurements, determined by an initial and a final instant (time of a competitor in an event, measurement of a period);
cumulative measurements, comparing the steps of two clocks over as long a period as is necessary for measurement accuracy.
Each device includes a time counter (pointer and dial, tape recorder), and manual or automatic tripping and stopping devices: the result is two sources of error that must be balanced and adapted to the phenomenon under study.
5.1 Precision stopwatch with hands: seconds counter
This device (figure 28...
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Special applications
Organizations
Research centers and laboratories
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France
ENSMM École Nationale Supérieure de Mécanique et des Microtechniques de Besançon. http://www.ens2m.fr/
France Telecom R & D http://www.rd.francetelecom.fr/
...
Standardization
Association française de normalisation (AFNOR) http://www.boutique.afnor.fr
Watchmaking
General
- Engrenages à denture cycloïdale corrigée ou à développante. Modules préférentiels. - NF S 80-501 - 3.95
- Engrenages à denture cycloïdale corrigée ou à développante. Dentures pour couples d'engrenages. - NF S 80-504 - 3.95
- Engrenages à denture cycloïdale corrigée ou à développante....
Manufacturers
(Non-exhaustive list)
Mechanical movements for watches (main)
Citizen
Jaeger Lecoultre: http://www.jaeger-lecoultre.com
Lemania
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