AC DC Marine branded oil temperature gauge, by Faria Beede Instruments.
- Anti-scratch glass lens
- Perimeter-lighted White dial
- 12 VDC negative ground
- Can be adapted for 24 VDC systems
- Dual Scale – Metric and Imperial
- Range 100-250°F
- Mounting hole 2″ (53mm)
A temperature gauge operates by sending a low amperage current through the gauge’s meter to the ground via a sending unit with variable resistance. The resistance of the sending units increases or decreases with the changes in pressure, temperature, etc.