Geometrical instruments – Area integrators – Electrical
Patent
1982-12-16
1985-09-24
Martin, Jr., William D.
Geometrical instruments
Area integrators
Electrical
33 27C, 33189, G01B 310, B43L 904
Patent
active
045425892
ABSTRACT:
A tape measure is provided with a marker. The marker may be contained in the tape measure case, mounted on the side of the case, or mounted on top of the case. In use, the marker is projected to mark a desired point on the surface being measured.
REFERENCES:
patent: 2842853 (1958-07-01), Hubbert
patent: 2893122 (1959-07-01), Greco
patent: 3148455 (1964-09-01), Aciego
patent: 3262211 (1966-07-01), Beckett
patent: 3731389 (1973-05-01), King
patent: 3802083 (1974-04-01), Freed
patent: 4015337 (1977-04-01), Taylor
patent: 4296554 (1981-10-01), Hammerstrom
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