Autometer Stack Instruments 52mm 50-115 Celsius 3/8 BSPT (M) Mechanical Water Temp Gauge - Black

Mechanical gauges do not require 12V power to operate. They make direct physical contact with the item they are reading. They do this through tubing or lines, which eliminates the need for electric signals.

• Mechanical gauges do not require 12V power to operate. They make direct physical contact with the item they are reading. They do this through tubing or lines, which eliminates the need for electric signals.
• Ideal for vehicles that operate on voltages other than 12V, with no voltage at all (magneto applications) or operate on a battery with no generator.
• Bronze bourdon tube 270 Degrees Sweep movement