Right angle measuring apparatus

Details Right angle measuring apparatus Right angle measuring apparatus

1985-03-29

1986-03-18

Little, Willis

Geometrical instruments

Area integrators

Electrical

33453, G01B 310

Patent

active

045759430

ABSTRACT:
Apparatus for marking a reference line on a working surface at a predetermined angle or disposition from an established base line. Three tape measures each have a housing and a retractable tape extending therefrom. The free ends of each tape are connected to the housing of one of the other tape measures. The scales on the tapes may be varied from a predetermined norm for ease of reading the scales to determine an exact right angle.

REFERENCES:
patent: 2718063 (1955-09-01), Ike
patent: 3191308 (1965-06-01), Lindenau
patent: 3269015 (1966-08-01), Barker
patent: 3568319 (1971-03-01), Moll
patent: 3668781 (1972-06-01), Teter
patent: 3812587 (1974-05-01), Elkins et al.

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