3-3/8in. DUAL GAUGE; 100-250 ° F/8-18V; ARCTIC WHITEA perfect solution for unique dash layouts, AutoMeter's Dual Function Water Temp and Voltmeter Gauge allows for a flexible dash layout and a clean look that's easy on dash real estate. Combing individual air core meter movements into one compact housing, you get the same durability and accuracy you've come to expect from AutoMeter's standalone instrumentation.The voltmeter reads between 8 and 18 volts on negative ground electrical systems, and an 1/8 NPT temperature sender is included. Domed Lens Traditional Incandescent Lighting Illuminates Perimeter Of Dial 12 And 16 Volt Compatible Incl. 1/8 in. NPT Temp Sender 3/8 And 1/2 in. NPT Adapters Incl. Bulb Socket Assembly Red/Green Bulb Covers Incl. Mounting Hardware/Installation Instructions Air-Core Electric Instrument Provide Quick And Accurate Readings Quality Construction Nostalgic Look 1 Year Limited Warranty