Straightly extensible measuring tape

Details Straightly extensible measuring tape Straightly extensible measuring tape

1980-05-19

1982-10-05

Haroian, Harry N.

Geometrical instruments

Area integrators

Electrical

G01B 310

Patent

active

043522440

ABSTRACT:
This invention relates to a straightly extensible measuring tape which can maintain a straight extension when it is extended. It comprises a curvature portion having a larger arc than a semicircle at section of a width direction of the measuring tape under a forceless state when it has been extended, and a flattened portion integrally formed with the curvature portion. Consequently, the measuring tape of this invention is able to be wound or extended at one's option by using a preferred winding means.

REFERENCES:
patent: 2050941 (1936-08-01), Farrand
patent: 3073544 (1963-01-01), Cirves et al.

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