Measuring rule

Details Measuring rule Measuring rule

1996-03-07

1998-04-07

Fulton, Christopher W.

Geometrical instruments

Distance measuring

Opposed contacts

33483, 33494, 335421, G01B 308

Patent

active

057350582

ABSTRACT:
An extendible measuring rule comprises a main frame and an extension element. The extension element is mounted within the main frame for easy extension and manipulation of the extension element. The main frame includes one or more scale markings, one of which is included beneath the extension element, and is progressively exposed as the extension element is withdrawn from the main frame.

REFERENCES:
patent: 224401 (1880-02-01), Derickson
patent: 1488482 (1924-04-01), Eckman
patent: 2642667 (1953-06-01), Smiley
patent: 4160328 (1979-07-01), Ernst
patent: 4170826 (1979-10-01), Holstein
patent: 4336655 (1982-06-01), Thingstad
patent: 4534113 (1985-08-01), Holstein
patent: 4566200 (1986-01-01), Brady et al.
patent: 5343628 (1994-09-01), Ham

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