0~8000 RPM, 250 X wide sweep scale External 4-6-8 cylinder selector switch Work on all
12 volt ignition systems including HEI, CDI & BEI Heavy-duty thru-shaft movement 0-11,000 RPM
*Works on all 12 volt gasoline engines. *High impact ABS housing.
*Adjustable advance knob with scale reading in direct degrees.
*Neon double check indicator insures proper hookup or detects faulty flash tube. *Detachable heavy duty inductive pick-up clamps and leads for easy operation and replacement.
*Bright xenon flash tube provides concentrated light for easy visibility of timing mark.