A compass intended primarily for use in observing bearings
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LAMINAR PARTICLES
Particles generated in rolling element bearings which have been flattened out by a rolling contact.
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AZIMUTH CIRCLE
An instrument used to take bearings of celestial objects.
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LANDING COMPASS
A compass taken ashore so as to be unaffected by deviation. If reciprocal bearings of the landing compass and the magnetic compass on board are observed, the deviation of the latter can be determined.
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LIGHT SECTOR
As defined by bearings from seaward, the sector in which a navigational light is visible or in which it has a distinctive color different from that of adjoining sectors, or in which it is obscured. See also SECTOR LIGHT.
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ANGLE OF CUT
The smaller angular difference of two bearings or lines of position
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BEARING BOOK
A log for the recording of visual bearings
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BEARING REPEATER
A compass repeater used primarily for observing bearings
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BAD-BEARING SECTOR
Relative to a radio direction finder station or radio- beacon, a sector within which bearings are known to be liable to significant errors of unknown magnitudes.
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COMPASS REPEATER
That part of a remote-indicating compass system which repeats at a distance the indications of the master compass. One used primarily for observing bearings may be called a bearing repeater. Also called REPEATER COMPASS.
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CUT IN
To observe and plot lines of position locating an object or craft, particularly by bearings
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