MP3298 Magnetic Pickup (20700162) BUZZER / FLASHING or it can be wired

or it can be wired directly to the Swichgage contacts for audible alarm only

the liquid in the sensing bulb changes to vapor creating pressure against the diaphragm mechanism

the tempered nickel silver gauge pointer acts as a pressure indicator and as one switch pole which completes a circuit when it touches the adjustable limit contact

20BTG-300-4-1/2: 2" B-Series Temperature Murphygage

This model has a 4 foot capillary length with a standard 1/2-14 NPT threading

MP3298 Magnetic Pickup (20700162) BUZZER / FLASHING or it can be wiredMP3298: Magnetic Pickup, 3" total length, 3" threaded length, 5 8 18 UNF thread size (20700162) The MP3298 Magnetic Pickup has a total length of 3 inches, threaded length of 3 inches, and thread size of 5 8 18 UNF. It replaces 20 01 0080 and MP100. The leadwire hookup measures 12 inches (305 mm). Magnetic Pickups supply RPM data to a tachometer when mounted at the flywheel ring gear of an engine.