Geometrical instruments – Area integrators – Electrical
Patent
1978-09-26
1980-08-12
Little, Willis
Geometrical instruments
Area integrators
Electrical
G01B 518
Patent
active
042165857
ABSTRACT:
A depth gage for indicating the depth of a hole through a workpiece which is to be attached to a nut-plate by a threaded fastener, comprises a rod with a cylindrical portion adapted to pass through the hole and abut the nut-plate so that a forward section of the rod enters within the threads of the nut-plate. A sleeve slidable on the rod in front of the workpiece can be slid to abut the front surface of the workpiece. Graduated markings on the rod indicate the depth of the hole.
REFERENCES:
patent: 1248340 (1917-11-01), Kinney
patent: 3962793 (1976-06-01), Blume
Hi-Shear Corporation
Little Willis
Mon Donald D.
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