... measure vacuum, pressure, differential pressure or temperature in a variety of applications. Its compact, epoxycoated enclosure and hermetically sealed snap switch provide superior ... Temperature models: ± 1% of adjustable range Pressure models 171-174, 218, 358-376, 520-535, 540-543, 560-564 and 700 ... 706: 1/4” NPT (female); models 171-194, 483-494, 520-535: 1/2” NPT (female); models 560-564: 2” ...