For over 100 years, Hoyt has set the standards for accuracy, quality, and dependability in pressure and temperature measurement. The V06232 Temperature Switch  Gauge available in 52mm. type 5/8" - 18 UNF 140 - 250degrees F/50-120 degrees c with adjustable set point. Liquid filled with hair bore capillary, well sheilded with stainless steel wire braiding and plastic sleeve for mechanical short -circuiting. Design assures linear indication and makes it rugged enough and capable of bearing accidental abuse, unlike vapor pressure gauges by others.