Lötkolben-Regler (mit Thermoelement)

Many model cars; boats and aeroplanes use internal combustion engines which have to be started by means of a glowplug. It often happens, however, that these glow- plugs get dirty or wet (from fuel), with the result that the motor fails to start. By temporarily increasing the dissipation of the plug it is possible to `burn off` troublesome moisture or `gunge`.