TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

OPTICAL SCALE [2 records]

Record 1 1986-02-10

English

Subject field(s)
  • Measuring Instruments

French

Domaine(s)
  • Appareils de mesure

Spanish

Save record 1

Record 2 1985-11-01

English

Subject field(s)
  • Surveying Instruments
  • Mathematical Geography
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.

French

Domaine(s)
  • Instruments d'arpentage
  • Géographie mathématique
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 (...).

OBS

Dans le cas des microscopes utilisés en France, les limbes sont gradués en grades et l'échelle en centigrades.

Spanish

Save record 2

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