Here is the easy way to inflate tyres with the new improved Schrader Spark Plug Air Pump which eliminates all the physical effort of hand or foot pumping. The pump body is fitted to the engine in place of a spark plug and the thumb lever connection at the other end is attached to the tyre valve. When the engine is running slowly it pumps cool, clean air at the compression figure of the cylinder used. The Spark Plug Air Pump has many uses in providing compressed air facilities away from garage and service station and is invaluable to motorists, caravanners, farmers, truck operators, fire stations etc. Apart from tyres it can be used for inflating air mattresses and pneumatic boats, maintaining pressure in pressure water cisterns and tanks from which paint or garden spray guns are operated. Two models are available - standard type and the gauge type.