Home / Avionics / Instruments & Gauges / Fuel & Water Temp Gauge, Compasses / Swift, Water Temp., 2 Inch Swift, Water Temp., 2 Inch$49.87 Swift, Water Temp., 2 Inch quantity Add to cart SKU: INWT120 Category: Fuel & Water Temp Gauge, Compasses Description Description Does not include the head mounted probe (1/8″ NPT). Requires 12 VDC power, must have battery or 12 VDC power supply. See INEL100 low power adaptor 12 VDC in this section or use regulator / rectifier designed for use without battery.