COORDINATE SCALE OF INVERTED PLUMB LINE STRING Russian patent published in 2010 - IPC G01C15/10 

FIELD: physics.

SUBSTANCE: coordinate scale of the string of an inverted plumb line has a toroidal-shaped vessel containing liquid, a float, a position-sensitive satellite-borne receiver, a tribach and a computer. The coordinate scale also has a measuring mark attached to the sting of the inverted plumb line lower than the point of its attachment to the float, and a position-sensitive video sensor which is mechanically connected to the antenna of the satellite-borne receiver and is fitted in the tribach. The optical axis of the video sensor is superposed with the longitudinal axis of the antenna and the tribach is fitted over windows made in the cover of the inverted plumb line and in the lower part of the inner pipe of the float such that the measuring mark is in the field of view of the video sensor through these windows.

EFFECT: higher measurement accuracy and reduced errors.

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