Geometrical instruments – Area integrators – Electrical
Patent
1981-12-14
1983-09-13
Stearns, Richard R.
Geometrical instruments
Area integrators
Electrical
33166, 401195, G01B 318, B43K 2900
Patent
active
044034180
ABSTRACT:
A threaded extension between two members forming a support housing for writing means is provided with indicia for measuring the dimension of an object. Collar sections at opposite sides of the threaded extension are used to engage with the object placed between the two members.
REFERENCES:
patent: 620337 (1899-02-01), Lavigne
patent: 1746065 (1930-02-01), Van Sant
patent: 1768694 (1930-07-01), Keeran
patent: 2468581 (1949-04-01), Wells
patent: 2565140 (1951-08-01), Leustig
Murray Thomas H.
Poff Clifford A.
Stearns Richard R.
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