Horsepower Indicator, -500 to 5000 HP, Allison Engine

$14.50

This is a Horsepower Indicator, displaying HP from -500 to 5000 HP at 100% RPM. This was manufactured by Hickock Electrical Instrument Co., part number 560-422, also labeled with an Allison Engine part number 6734355A. Measures 2.25 inches diameter and ~3 inches deep.