Inclination angle ruler

Details Inclination angle ruler Inclination angle ruler

1996-07-02

1997-09-09

Bennett, G. Bradley

Geometrical instruments

Miscellaneous

Light direction

33494, 235 69, G01B 500, B43L 700

Patent

active

056643349

ABSTRACT:
This invention pertains to a new type of ruler for measuring the angle of inclination of a portion of terrain from a topographical map. Topographical maps contain precise information relating to elevation changes and distances. These two pieces of information can be used together to devise a scale to measure the angle of inclination, or pitch, of any slope represented on the map. The invention is simply the inscription of such a scale on a straight, flat material. The invention can be made with a unique scale for any given map scale and contour interval height.

REFERENCES:
patent: 190447 (1877-05-01), Putnum
patent: 846241 (1907-03-01), Overland
patent: 1976861 (1934-10-01), Tombal
patent: 2140914 (1938-12-01), Kothny
patent: 3325901 (1967-06-01), Bruscaglioni
patent: 4097998 (1978-07-01), Klimavicz et al.
patent: 4117313 (1978-09-01), Vincent
patent: 4217696 (1980-08-01), Schindler
patent: 4271596 (1981-06-01), Ganis

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