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The instrument can be supplied with different scale faces. 0-10,000 is very popular but 0-12,000 and the suppressed zero 6,000-14,000 are available.
The instrument has to be matched to the ignition. Inductive ignitions require the 'LZ' range of instruments and commonly available specifications are LZ051 (1 spark per 2 crankshaft revolutions), LZ013 (1 spark per crankshaft revolution), LZ153 (3 sparks per 2 crankshaft revolutions) and LZ023 (2 sparks per crankshaft revolution). Other forms of ignition require other specifications.
Copyright © 2000 Philip Pick
Version 0.1 Date January 2001