Sunpro CP8207 Mechanical Water/Oil Temperature Styleline Gauge - White Dial Measures from 100 to 250 degrees F 2-in white face dial with black numbers and red pointer Designed for negative ground systems Includes a 72-in capillary tubing with 5/8-in national pipe thread and 1/4-in, 3/8-in and 1/2-in adaptors They include 72" capillary tubing with 5/8" NPT thread and 1/4", 3/8" and 1/2" adapters