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OPTICAL SCALE [2 records]
Record 1 - internal organization data 1986-02-10
Record 1, English
Record 1, Subject field(s)
- Measuring Instruments
Record 1, Main entry term, English
- optical scale 1, record 1, English, optical%20scale
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, French
Record 1, Domaine(s)
- Appareils de mesure
Record 1, Main entry term, French
- balance à projection
1, record 1, French, balance%20%C3%A0%20projection
feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 1985-11-01
Record 2, English
Record 2, Subject field(s)
- Surveying Instruments
- Mathematical Geography
Record 2, Main entry term, English
- optical scale 1, record 2, English, optical%20scale
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 CONT
The optical scale system ... uses a microscope fixed on the scale, but has a diaphragm in the microscope with a scale of divisions marked on it. ... Only one degree division of the scale can show in the microscope scale, and the number of that division gives the circle reading in degrees. The number of minutes at the circle division is noted from the microscope scale, and finally, seconds are estimated to the nearest 10 or 15. 1, record 2, English, - optical%20scale
Record 2, French
Record 2, Domaine(s)
- Instruments d'arpentage
- Géographie mathématique
Record 2, Main entry term, French
- microscope à échelle
1, record 2, French, microscope%20%C3%A0%20%C3%A9chelle
masculine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 OBS
Habituellement, les limbes, dans ce cas-là, sont gradués en degrés. L'image d'une échelle, donnant les minutes, placée dans le plan du réticule, se superpose à celle du limbe (...). 1, record 2, French, - microscope%20%C3%A0%20%C3%A9chelle
Record number: 2, Textual support number: 2 OBS
Dans le cas des microscopes utilisés en France, les limbes sont gradués en grades et l'échelle en centigrades. 1, record 2, French, - microscope%20%C3%A0%20%C3%A9chelle
Record 2, Spanish
Record 2, Textual support, Spanish
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