Geometrical instruments – Straightedge type – Rules
Patent
1998-11-10
2000-05-16
Gutierrez, Diego
Geometrical instruments
Straightedge type
Rules
33492, 33458, B43L 700, G01B 304
Patent
active
060619201
ABSTRACT:
A transparent measuring device for topographical maps is graduated for converting a particular map scale in units of yards and/or fractions of a mile. The measuring device has a substantially rectangular body having a first, second and third top face, a first and second side surface and a bottom surface. The third top face is disposed between said first and second faces as a distinct magnifier. The first top face has a graduated scale including indicia for designating a measuring scale in units of yards. The second top face has a complimentary graduated scale including indicia for designating a measuring scale in units of miles which is directly correlated with measurements made in units of yards on the first face by a scalar conversion factor. A plurality of the measuring scales are attached at single point as and forms a unitary kit of measuring devices for measurements requiring different scales.
REFERENCES:
patent: 291429 (1884-01-01), Tuttle
patent: 443652 (1890-12-01), Jewell et al.
patent: 1497492 (1924-06-01), Engel
patent: 1728420 (1929-09-01), Little
patent: 2736097 (1956-02-01), Coleman
patent: 3837569 (1974-09-01), Bradbury et al.
patent: 4217696 (1980-08-01), Schindler
patent: 4314408 (1982-02-01), Shoemaker
patent: 4426790 (1984-01-01), Kimel
patent: 4484395 (1984-11-01), Samuels
patent: 4562649 (1986-01-01), Ciavarella
patent: 4641436 (1987-02-01), Tzen et al.
patent: 4734993 (1988-04-01), Pan
patent: 5014438 (1991-05-01), Gravel
patent: 5020233 (1991-06-01), Syken
patent: 5479719 (1996-01-01), Liu
patent: 5664334 (1997-09-01), Watts
patent: 5735058 (1998-04-01), Jimenez
patent: 5771598 (1998-06-01), Lassberg
patent: 5822875 (1998-10-01), Feldner
Doan Quyen
Gutierrez Diego
Litman Richard C.
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