Multi-function measuring apparatus

Details Multi-function measuring apparatus Multi-function measuring apparatus

1987-02-11

1987-10-06

Stearns, Richard R.

Geometrical instruments

Scriber

Curved line

33138, 33342, 33393, 33414, G01B 310, G01C 1510

Patent

active

046973494

ABSTRACT:
A housing substantially with a rectangular-box shape containing a flexible measuring tape stored therein and a tape-opening provided on the upper face thereof. An ink box containing ink and an ink thread is provided on the front face of the housing. The outermost end of the ink thread is attached to a needle grip with a needle. A level is provided on the upper face of the housing. A pivotal centering needle is provided on a position of one side face of the housing proximate to the tape-opening. The centering needle is used as a centering arm for a pair of compasses while the measuring tape is used as a cantilever arm for determining the radius of an arc or a circle. A pivotal plate set of the first side face of the housing and a hook member set of the opposite face, together with the ink thread pulled out, provide the function of a plumb rule for determining the vertically of a perpendicular plane.

REFERENCES:
patent: 1473877 (1923-11-01), Rome
patent: 2673398 (1954-03-01), Baumgart
patent: 3191308 (1965-06-01), Lindenau
patent: 3526964 (1970-09-01), Clark, Jr.
patent: 3568322 (1971-03-01), Showers
patent: 4143462 (1979-03-01), Gertz
patent: 4438538 (1984-03-01), Larsen

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