Moeller Remote indicating thermometer. -20 to 120 degrees fahrenheit. NSN 6685-00-254-6599 Also P/N V80342/8-9G6; 41203-AB; 413F-R00L-C40Y. Please refer to the following specs for more information:... Case Diameter... 5.813 inches nominal... Dial diameter... 4.5 inches nominal... Scale Type... Concentric Dial...