Geometrical instruments – Straight-line light ray type – Alignment device
Patent
1980-05-14
1983-03-01
Martin, Jr., William D.
Geometrical instruments
Straight-line light ray type
Alignment device
33143R, 33158, 33180AT, 33192, G01B 525
Patent
active
043751318
ABSTRACT:
A system of three gauges is provided and each gauge includes an upright support standard for support from a horizontal surface extending along one side of a vehicle frame elevated relative to the surface and each support standard includes an elongated horizontal body having a first reference location at one end and a second reference location carried by and shiftable longitudinally of the other end of the body. Scale structure is provided on each gauge operative to indicate changes in the spacing, longitudinally of the body, between the first and second reference locations and the scale structure includes an indicator portion for indicating changes in the distances between the first and second reference locations equal to twice the actual change in distance therebetween.
REFERENCES:
patent: 1816695 (1931-07-01), Pope
patent: 2816366 (1957-12-01), Barlow
patent: 3213544 (1965-10-01), Adler
patent: 3330478 (1967-07-01), Berry
patent: 3983635 (1976-10-01), Jarman
patent: 4058903 (1977-11-01), Wilkerson
patent: 4291468 (1981-09-01), Follett
Hinson Virgil H.
Jarman Davis R.
Jacobson Harvey B.
Martin, Jr. William D.
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