Manual plug comparator for checking the diameter of holes

Details Manual plug comparator for checking the diameter of holes Manual plug comparator for checking the diameter of holes

1981-05-29

1983-05-10

Stearns, Richard R.

Geometrical instruments

Area integrators

Electrical

33143L, 33147K, G01B 712, G01B 326

Patent

active

043823386

ABSTRACT:
A manual plug comparator for verifying the diameter of holes of mechanical parts, having a central support plate which supports a movable measurement unit, a protective and centering casing and a handle. The movable measurement unit comprises two movable arms each bearing a feeler, which feelers come into contact with the part to be checked. An electric cord terminating in a connector makes it possible to connect a position transducer which notes the position of the movable arms to an electrical supply, detection and indication group. A cord-holder device is fastened to one end of the handle in a removable manner. The handle has an opening which, after the removal of the cord-holder device and the detachment of the handle from the support plate, makes it possible completely to remove the handle from the cord and the connector.

REFERENCES:
patent: 2076944 (1937-04-01), Howe
patent: 2369909 (1945-02-01), Mestas
patent: 2474802 (1949-06-01), Poole
patent: 2642671 (1953-06-01), Graham et al.
patent: 4030202 (1977-06-01), Fadl et al.
patent: 4077130 (1978-03-01), Possati
patent: 4290204 (1981-09-01), Possati

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