ROBERT P DARLINGTON
Broker in Acton, MA
License number
Massachusetts 29205
Issued Date
Nov 1, 1978
Expiration Date
Dec 26, 1988
Type
Salesperson
Address
Address
Acton, MA 01720
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the outer end; means for releasably securing the arm to the outer end; and retraction means for enabling the arm to be withdrawn within the outer end.