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SAE J678 (AUG2011)

Current Revision

Speedometers and Tachometers-Automotive

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This SAE Recommended Practice applies to speedometers, odometers, and speedometer drives typical of passenger vehicles, buses, and trucks used for personal or commercial purposes. The method of determining wheel revolutions per unit distance ( 3.1 ) and overall system design variation ( 3.3.3 ) are applicable to passenger cars only. Comparable recommendations for trucks and buses are under development. The data of tachometers is applicable to vehicular use, as previously described, and also to stationary and marine engines and special vehicles.

SDO SAE: SAE International
Document Number J678
Publication Date Aug. 5, 2011
Language en - English
Page Count 11
Revision Level 201108
Supercedes
Committee
Publish Date Document Id Type View
Aug. 5, 2011 J678_201108 Revision
Dec. 1, 1988 J678_198812 Revision
June 1, 1984 J678_198406 Revision