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Total record count: 6269.

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Eng ID Term Definition
921
compass: inverted
See COMPASS: HANGING.
922
compass: liquid
A MAGNETIC COMPASS having a bowl completely filled with liquid in order to damp the swinging of the card. Sometimes called spirit compass, o... more
A MAGNETIC COMPASS having a bowl completely filled with liquid in order to damp the swinging of the card. Sometimes called spirit compass, or wet compass.
923
compass: magnetic
A COMPASS depending for its directi­ve force upon the attraction of the MAGNETISM of the EARTH for a MAGNET free to turn in an horizontal d... more
A COMPASS depending for its directi­ve force upon the attraction of the MAGNETISM of the EARTH for a MAGNET free to turn in an horizontal direction.
924
compass: master
A COMPASS controlling one or several REPEATERS.
925
compass: master gyro
A GYROSCOPIC COMPASS for control­ling one or several remote indicators, called GYRO REPEATERS.
926
compass: overhead
See COMPASS: HANGING.
927
compass: pocket
A portable COMPASS (employed in COASTLINING or RECONNAISSANCE SURVEY).
928
compass: sky
A type of ASTRO COMPASS which utilizes the POLARIZATION of sunlight in the sky, designed for use in the arctic during long periods of TWILIG... more
A type of ASTRO COMPASS which utilizes the POLARIZATION of sunlight in the sky, designed for use in the arctic during long periods of TWILIGHT. It operates whenever the ZENITH is clear whether or not the SUN is visible, but when the SUN is more than about 6.5° below or 10° above the HORIZON, readings are uncertain.
929
compass: spirit
See COMPASS: LIQUID.
930
compass: standard
A COMPASS designated as the STANDARD for a vessel. It is located in a favourable position and is accurately calibrated.
931
compass: steering
The COMPASS placed next to the stee­ring wheel, by which the COURSE is steered. See also STEERING REPEATER.
932
compass: sun
A form of ASTRO COMPASS utilizing the shadow of a GNOMON.
933
compass: surveyor's
An instrument for determining a MAGNETIC BEARING of a LINE OF SIGHT by the use of a sighting device, a graduated HORIZONTAL CIRCLE and a piv... more
An instrument for determining a MAGNETIC BEARING of a LINE OF SIGHT by the use of a sighting device, a graduated HORIZONTAL CIRCLE and a pivoted NEEDLE.
934
compass: trough
See DECLI­NATOIRE.
935
compass: tubular
A COMPASS supplied for attachment to certain types of LEVELS and THEODOLITES.
936
compass: wet
See COMPASS: LIQUID.
937
compass adjustment
See COMPENSATION OF MAGNETIC COMPASS.
938
compass adjustment buoy
A BUOY placed at a favourable location to assist a vessel to adjust its COMPASS or swing ship. Also called swinging buoy. See also SWINGING ... more
A BUOY placed at a favourable location to assist a vessel to adjust its COMPASS or swing ship. Also called swinging buoy. See also SWINGING SHIP.
939
compass bearing
See BEARING.
940
compass bowl
That part of a COMPASS in which the COMPASS CARD is mounted. A magnetic compass bowl is usually filled with liquid. The compass bowl turns w... more
That part of a COMPASS in which the COMPASS CARD is mounted. A magnetic compass bowl is usually filled with liquid. The compass bowl turns with the craft while the COMPASS CARD remains essentially in a north-south direction.