Mechanical Water Temperature Gauge;120 - 240 Deg F;Incl. 6 ft. Tubing; California Residents: WARNING Engines do not like high water temperatures, Heat is the enemy of performance and reliability. Keep tabs on your temps with the most accurate, quickest responding water temperature gauge on the market. Auto Meters advanced bourdon tube meter movement provides unparalleled performance in the most demanding applications. A 6 foot capillary tube and 1/2 inch NPT mounting nut are included.