This magneto timer is 100% solid state and uses the latest digital circuitry with a bright led light read out. Magneto timer light measures the change of inductance in the magneto when the points open or close. What makes this magneto timer light a fool proof tool is that by simply touching the two wires together this will not indicate points closing giving the racer a false reading caused by loss of contact to the magneto grounding unit.
Simple to use and includes detailed instructions. The size is convenient at 3/4" x 3" x 5" and is packaged in an anodized alum. case that won't melt or break. The power is provided by a simple nine volt battery that is included.