Weksler Temperature gauge -40 to 180 degrees fahrenheit. NSN 6685-00-782-5244. Also P/N E318A2; 026-17307; 026-23421-004; 1735C1; 19-04-0227. Please refer to the following specs for more information:... Overall Length:... 3.391 inches nominal... Stem Length... 2.00 inches nominal... Design Type... Fluctuating...