ROBERT P DARLINGTON
Architects in Acton, MA
License number
Pennsylvania RA005801B
Category
Architects
Type
Registered Architect
Address
Address
2
Acton, MA 01720
Pennsylvania
Pennsylvania
Professional information
Length And Angle Gauge
US Patent:
4328619, May 11, 1982
Filed:
Oct 20, 1980
Appl. No.:
6/198626
Inventors:
William Lefevre - Newton Highlands MA
Robert P. Darlington - Acton MA
Robert P. Darlington - Acton MA
International Classification:
G01B 308, G01B 356
US Classification:
33161
Abstract:
A length and angle gauge including first and second longitudinally aligned and slidably engaging ruler sections; means for releasably securing the sections; each section having an inner end and an outer end, one of the sections bearing a length scale starting at the outer end and ascending toward the inner end, the other section bearing a continuation of the length scale with the scale value for the minimum retracted length of the gauge starting at the outer end and ascending toward the inner end; a rotatable arm located at the outer end of each section and having a slanted surface; means for rotatably mounting the arm to the outer end; means for releasably securing the arm to the outer end; and retraction means for enabling the arm to be withdrawn within the outer end.