// gauge set up values
int gaugePin = 2; 
int gaugeValue = 0;

// the A2D converter generates a value between 0 and 1023
// long is sensible choice for the average
long gaugeCount = 0;

int gauge_reading()                       
{
  gaugeCount = 0;
 
  // take 100 readings
  for (int i=0; i < 100; i++)
  {
    gaugeValue = analogRead(gaugePin);
    gaugeCount += gaugeValue;
    delay(10);
  }
  
  // spit out an average
  int average = gaugeCount / 100;

  return average;

}