Surveying equipment

Details Surveying equipment Surveying equipment

1987-03-30

1988-05-17

Stearns, Richard R.

Geometrical instruments

Area integrators

Electrical

33178R, 33490, G01B 304, G01B 508, G01B 512

Patent

active

047441518

ABSTRACT:
A measuring assist device which attaches to a surveying or measuring rod to aid in, but not limited to, measuring the depths (inverts) and/or sizes (inside or outside diameters) of pipes within structures such as manholes, catch basins, inlets, valve vaults, etc.

REFERENCES:
patent: 1529210 (1925-03-01), Parker
patent: 2199235 (1940-04-01), Ashel
patent: 2649784 (1953-08-01), Klimek
patent: 2957246 (1960-10-01), Sorensen
patent: 3913232 (1975-10-01), Marcell
patent: 3995373 (1976-12-01), Brumbelow
patent: 4536960 (1985-08-01), Muti

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