Ignition timing pen, old type

Ignition timing pen to be used to adjust contact points or electronic ignition on a 2cv6/425 motor with a 3 finger clutch set. For adjustment, the pin is placed in the appropriate hole in the crankcase. The flywheel is then turned by hand until the hole in the flywheel is in line with the pin. This point is the right time for the ignition to be adjusted. Note, remove the pen before starting!