Geometrical instruments – Indicator of direction of force traversing natural media – With measurement in plural directions or of shape
Patent
1980-06-26
1982-06-22
Martin, Jr., William D.
Geometrical instruments
Indicator of direction of force traversing natural media
With measurement in plural directions or of shape
33 1SD, 33 1N, 33342, 33355R, G01C 1704
Patent
active
043355218
ABSTRACT:
This invention is directed to a method of determining and recording an indeterminate sequence of distance/direction coordinates in a manner that permits the user or some other person to subsequently retrace the coordinates. Apparatus is disclosed to enable the user to record and retrace the coordinates with a high degree of precision.
REFERENCES:
patent: 1399685 (1921-12-01), Boz
patent: 2015627 (1935-09-01), Hug
patent: 2618856 (1952-11-01), Sweet
patent: 2674804 (1954-04-01), Reinhardt
patent: 3795053 (1974-03-01), Burke
patent: 4241511 (1980-12-01), Frigano
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