Angle measuring device

Details Angle measuring device Angle measuring device

1981-05-29

1984-08-21

Martin, Jr., William D.

Geometrical instruments

Straight-line light ray type

With telemetric means

33 1T, 33 1PT, 324208, 250231SE, G01C 100

Patent

active

044661894

ABSTRACT:
An angle measuring device includes a mechanism rotatable to define an angle to be measured and a rotating scanner for producing a first number of pulses corresponding to the angle to be measured. The first number of pulses is frequency multiplied to a second, higher number of pulses to decrease the magnitude of measured angle per pulse and thereby increase the accuracy of the resulting measurement. The second number of pulses are counted, converted to an angle value and held in a display for convenient reading. Preferably, the rotatable mechanism is a gun-like member with sights for aiming it at a target the angle to which is to be measured and a trigger for actuating the measuring, and at least the gun-like member is gimbal mounted to adapt the device for use as a pelorus on a ship.

REFERENCES:
patent: 2770798 (1956-11-01), Roth
patent: 2930895 (1960-03-01), Kuehne
patent: 2940171 (1960-06-01), Steele
patent: 3096444 (1963-07-01), Seward
patent: 4072893 (1978-02-01), Huwyler
patent: 4136955 (1979-01-01), Aeschlimann et al.
patent: 4318225 (1982-03-01), Jenkinson

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