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    Nice, Karim.  "How Fuel Gauges Work"  04 April 2001.  HowStuffWorks.com. <http://auto.howstuffworks.com/fuel-gauge.htm>  16 January 2013.
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    Introduction to How Fuel Gauges Work
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    The Sending Unit
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    The Gauge
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    Microprocessor-controlled Gauges
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