Item No.: B15V026
.Works on all 12 volt gasoline engines.
.Test spark advance angle
.High impact ABS housing
.Timing is given in degrees or linear measurement
.BTDC: Before top dead centre (timing advanced).
.ATDC: After top dead centre (timing retarded).
.Automatic reverse polarity and overload protection
.APPROX 1.5m electrical wire
.APPROX 1.5m electrical clamp