Geometrical instruments – Distance measuring – Single contact with a work engaging support
Patent
1988-10-26
1990-04-24
Cuchlinski, Jr., William A.
Geometrical instruments
Distance measuring
Single contact with a work engaging support
33600, 33833, G01B 502, G01B 518
Patent
active
049188275
ABSTRACT:
A hand-manipulated device is provided for ascertaining the operating temperature range of a spark plug by measuring the length of the ceramic insulator component of the spark plug. The device is comprised of an elongated probe rod slideably held by a holder having a scale. In use, the tip of the holder is placed upon the upper extremity of the ceramic insulator, and the probe rod is extended downwardly until it contacts the base of the insulator. The length of the probe rod thus extended is shown by an indicator interactive with the scale.
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Cuchlinski Jr. William A.
Gutierrez Diego F. F.
Rainer Norman B.
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