Electronic goniometer for finding reception minimum - has input signals weighted by only single digital-to-analog converter
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OPTICAL ANGLE MEASURING DEVICE, ESPECIALLY SEXTANT
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Method and device for measuring a true bearing with high accuracy on a moving vehicle
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Method and device for determining the course of vehicles by means of a gyro compass
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Device for remote reading of magnetic compasses
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Bearing for the barrel screw of a sextant
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Floating gyroscope system housing - has central power pin mounted on gimbal system to avoid housing damage
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Gyro compass with simple rubber bellows - providing suspension mounting of rotational symmetrical shape and with rigid detachable connections
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MAGNETIC COMPASS
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Gimbal-mounted compass with spherical visor - uses totally reflected light from source located on viewing side to illuminate compass card
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DEVICE FOR MEASURING THE TIGHTENING ANGLE ON A WRENCH
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DEVICE FOR MEASURING TIGHTENING ON A WRENCH
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Simplified light-weight sextant - has one-piece metal pressing incorporating arms, arc and mountings
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Sextant with illuminated reading scale - has side plate for scale graduations with illumination provided by bulb energised by small cylindrical battery
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DEVICE FOR MEASURING THE TIGHTENING ANGLE ON A WRENCH
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Liquid compass with pressure equalizing chamber - has no eccentric forces acting on the bowl or the float system
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Magnetic fluid compass float system - has balancing arrangement involving removal of small weights from periphery of float
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Magnetic fluid compass float rose - has imprint directly readable from one side and mirror inverted from other side
