Plotter

Details Plotter Plotter

1978-12-04

1980-03-04

Martin, Jr., William D.

Geometrical instruments

Miscellaneous

Light direction

33403, 33431, G01C 2120

Patent

active

041909607

ABSTRACT:
A navigational plotter which generally comprises a rectangular elongated member comprising two straight edges and having a circular protractor rotatably secured thereto in the geometric center. The rectangular elongated member has a plurality of distance scales formed along and adjacent to each of the two opposite longitudinal straight edges thereof. These distance scales correspond to, for example, statute miles, nautical miles or kilometers, and each scale is spaced apart from the other to provide between adjacent scales a clear, unobstructed course line window which permits the navigational plotter to be placed over or adjacent to a course line on a chart without obscuring it. The scales along one longitudinal straight edge of the navigational plotter can correspond to the scaling of, for example, sectional charts, while those along the opposite longitudinal straight edge can correspond to, for example, the scaling of the WAC charts.

REFERENCES:
patent: 3271866 (1966-09-01), Gruber et al.
patent: 3280464 (1966-10-01), Warner
patent: 3496640 (1970-02-01), Warner

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