Aircraft Spruce '... Stocks the Foster Spark-On Pro' Campaign

Foster Spark-On Pro || Available from Aircraft Spruce & Specialty Co.

Aircraft Spruce Stocks the Foster Spark-On Pro
Spark-On Pro is designed to measure DC on resistance of 14mm to 18mm shielded plugs. It uses a 12-volt replaceable A23 battery and a precision current injector to push one milliamp through the plug resistor. A precision voltmeter across the plug displays the resulting voltage, which is one volt per thousand Ohms of plug resistance, per Ohm's Law. Thus the display accurately indicates plug resistance in kOhms. A spare battery is included. A chart is printed on the tool indicating acceptable resistance ranges. Call 1 (877) 4-SPRUCE and reference part #12-03735 or visit