Gauge for positioning a stop on the shaft of a root-canal instru

Details Gauge for positioning a stop on the shaft of a root-canal instru Gauge for positioning a stop on the shaft of a root-canal instru

1975-01-22

1976-06-22

Martin, Jr., William D.

Geometrical instruments

Area integrators

Electrical

33174D, 33185R, G01B 518

Patent

active

039641708

ABSTRACT:
A gauge for positioning a stop on a root-canal instrument is formed at one end with a handle and at the opposite end with a groove passing through a seat. The shaft of a root-canal instrument is seated in the groove with a stop fitted thereover lying in the seat. The shaft is then displaced relative to the stop and the seat such that its point travels along a scale starting at the edge of the seat so that the exact distance between the point and the stop can be determined. In addition the base plate forming this gauge is provided with a plurality of sockets each releasably holding a stop and is formed with a set of throughgoing gauge holes. Thus the dentist may ascertain with these gauge holes the diameter of the shaft of his root-canal instrument and then choose an appropriately sized stop from a selection thereof carried directly on the gauge in the sockets.

REFERENCES:
patent: 363331 (1887-05-01), Hammer
patent: 1027287 (1912-05-01), Shee
patent: 2059289 (1936-11-01), Svensson
patent: 2650435 (1953-09-01), Kidd

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