Geometrical instruments – Distance measuring – Single contact with a work engaging support
Patent
1993-03-10
1994-08-16
Fulton, Christopher W.
Geometrical instruments
Distance measuring
Single contact with a work engaging support
33833, 33534, G01B 500
Patent
active
053374894
ABSTRACT:
An instrument or gauge for measuring a parameter of a surface feature of a member such as a weld at the junction of two members of an oil rig. The instrument comprises a body adapted to be secured to the surface of a member during measurement, and a probe assembly carried by the body for angular and linear displacement with respect to the body and having relatively movable probe assembly parts and, and a datum for determining relative movement of those parts and, and an arrangement adapted to allow linear movement of the probe assembly relative to the body at a particular angular displacement of the probe assembly relative to the body. The instrument is portable, hand held and hand manipulable, and at one end of the body there is a pivotably mounted carrier in the form of a substantially cylindrical boss having a hole therethrough in which the probe assembly is slidably mounted and by which the probe assembly is carried for angular displacement with respect to the body. The arrangement adapted to allow linear movement of the body comprises a manually operable locking device, knob or nut which clamps the carrier in the body after a pivoting or angular motion or displacement with respect to the body.
REFERENCES:
patent: 2627118 (1953-02-01), Young
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patent: 4545124 (1985-10-01), Brooks
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patent: 4761892 (1988-08-01), Jankkila
patent: 4945651 (1990-08-01), Georg
patent: 5131166 (1992-07-01), Weber
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