Geometrical instruments – Indicator of direction of force traversing natural media – With marker
Patent
1978-11-20
1980-02-19
Phillips, Charles E.
Geometrical instruments
Indicator of direction of force traversing natural media
With marker
33391, C01B 1962
Patent
active
041887298
ABSTRACT:
A scribing protractor comprises a dial calibrated in selected units of angular measurement and plumb needle means pivotally mounted overlying the dial for determining the angle with reference to the vertical of a surface to be measured. Scribing means are provided on the assembly for marking the position of the protractor at the angle location.
REFERENCES:
patent: 1618262 (1927-02-01), Barger
patent: 1814976 (1931-07-01), Stromer
patent: 2822623 (1958-02-01), Legois
Farley Eugene D.
Phillips Charles E.
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