Geometrical instruments – Straightedge type – Plural straightedges – relatively moveable
Patent
1968-03-27
1982-05-04
Buczinski, S. C.
Geometrical instruments
Straightedge type
Plural straightedges, relatively moveable
33464, 33472, 235 61D, 235 61GM, 235 69, 367 99, B43L 700, B43L 1300
Patent
active
043275001
ABSTRACT:
A computational aid device for Ekelund range determinations comprising a e member adapted to be placed over a bearing/time plot and including two leg members to be aligned with intersecting bearing rate lines faired through the plot, and a range scale positionable with respect to the base and the leg members to provide direct readings of range and of probable limits of range error.
REFERENCES:
patent: 1409342 (1922-05-01), Henrichs
patent: 3104469 (1963-09-01), Burns et al.
Baroff James H.
Dickey David C.
Korb Barry R.
Raff Samuel J.
Adams R. W.
Beers R. F.
Buczinski S. C.
David H. A.
The United States of America as represented by the Secretary of
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