Target for measurements with angle-measuring instruments

Details Target for measurements with angle-measuring instruments Target for measurements with angle-measuring instruments

1983-03-31

1985-04-09

Martin, Jr., William D.

Geometrical instruments

Straight-line light ray type

Rod or target

33263, G01C 1506

Patent

active

045092699

ABSTRACT:
The invention contemplates a target device for marking inaccessible measuring points on industrial objects such as, for example, an airplane fuselage which is to be measured for coordinates of certain points on its surface, using a pair of theodolites.
The target device consists of a rod-shaped holder (1) on which two spherical target marks (4, 5) are so arranged that the measurement point lies on the extension of the line connecting the target marks, and at known offset from the measurement point.
For attachment to the object (12) to be measured, the holder (1) employs removable adapters, such as threaded bolts (3).

REFERENCES:
patent: 969732 (1910-09-01), Tebyrica
patent: 2058998 (1936-10-01), Koulichkov

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