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Class Information
Number: 33/274
Name: Geometrical instruments > Straight-line light ray type > With straight edge instrument or chart
Description: Device having a marker, rule, protractor, square or the like adapted to be used in plotting or in forming geometrical figures on a map or chart, the sides and angles of which correspond to various positions and angles taken by the sighting instrument.

Patents under this class:

Patent Number Title Of Patent Date Issued
8397422 Gun sight adjustment device Mar. 19, 2013
8316573 Gun sight adjustment device Nov. 27, 2012
4637143 Plotting device Jan. 20, 1987
4459758 Topographical surveying instrument Jul. 17, 1984
4349965 Four wheel alignment method and apparatus for automotive vehicles Sep. 21, 1982
4327497 Marine computer May. 4, 1982
4274203 Level device Jun. 23, 1981
4241511 Method and apparatus for determining and recording boat compass deviation Dec. 30, 1980
4236313 Apparatus for and method of evaluating solar exposure Dec. 2, 1980
4232450 Football yardline locating device Nov. 11, 1980
4231162 Range finder Nov. 4, 1980
4081912 Magnetic bearing plotting and sighting device Apr. 4, 1978
4057906 Navigational instruments Nov. 15, 1977
3988838 Artists device Nov. 2, 1976

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