Multi-function measuring instrument

Details Multi-function measuring instrument Multi-function measuring instrument

1976-09-24

1977-08-30

Phillips, Charles E.

Geometrical instruments

Area integrators

Electrical

33138, 33 94, B43L 706

Patent

active

040444694

ABSTRACT:
An adjustable geometrical instrument for making interrelated angular and linear measurements comprising an alinement head, a detachably mounted retractable tape measure, and a slidably mounted cooperating angle indicator. Indices of linear measurement are provided on the alinement head for determining the distance between the tape measure and the vertex of the angle being formed by the angle indicator and the alinement head, thus providing for calculation of the total linear distance between a reference point and the desired point of angular measurement. Provision is made for mounting the tape measure at either end of the alinement head in alinement therewith by means of a permanent magnet recessed in the bottom of the tape measure unit and alinement pins which cooperate with corresponding mounting recesses in the alinement head.

REFERENCES:
patent: 236469 (1881-01-01), Walters
patent: 823444 (1906-06-01), Sassaman
patent: 1983516 (1934-12-01), Ahola
patent: 2352169 (1944-06-01), Alexander
patent: 2517264 (1950-08-01), Wake
patent: 3036791 (1962-05-01), Siggelkow
patent: 3095651 (1963-07-01), Luedicke
patent: 3225451 (1965-12-01), Olexson et al.
patent: 3269015 (1966-08-01), Barker

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