Compact measuring device

Details Compact measuring device Compact measuring device

1987-01-30

1988-07-12

Martin, Jr., William D.

Geometrical instruments

Area integrators

Electrical

242107, G01B 310

Patent

active

047560878

ABSTRACT:
A compact extra-length tape measuring device with capacity for four hundred foot measurement, sized so that no dimesion exceeds six inches, uses a narrow thin tape suitably marked with measuring indicia and held to be unwound and rewound on a space-saving offset storage spool. Rotation of the spool during tape withdrawal tightens a coiled flat spring through a gear reduction drive; the tape, when released, is automatically rewound on the spool by action of the unwinding spring. A lock-release mechanism and a tape-viewing magnifying window also may be provided.

REFERENCES:
patent: 3120059 (1964-02-01), Quenot
patent: 3255531 (1966-06-01), Anderson
patent: 4142693 (1979-03-01), Czerwinski
patent: 4402472 (1983-09-01), Burtscher
patent: 4527334 (1985-07-01), Jones et al.
K & E Publication, "Albadine", 1954.

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