For years, I carried a feeler gauge and the screwdriver I needed to reset the points on a rear-engine VW, just so I could stop whenever I saw a broken-down bug and reset the points so the hapless occupants could be on their way again.
12.
However it is necessary to check periodically the maximum opening gap of the breaker ( s ), using a feeler gauge, since this mechanical adjustment affects the " dwell " time during which the coil charges, and breakers should be re-dressed or replaced when they have become pitted by electric arcing.
