Temperature is 100-265 degree Fahrenheit Stewart Warner Deluxe Series 2-5/8" gauges are ideally suited for racing use with their large diameter, easy-to-read faces. The Deluxe Series features white lettering and pointer on a black face surrounded by a low profile stainless steel bezel. Gauge is back lit for excellent night-time illumination (bulb is replaceable). Specify 60" or 72" capillary tube.