WWII USAAF Temperature Gauge. P-51 Mustang

This is a classic USAAF temperature gauge as found in the P-51 Mustang. Early version made for the rear mounted one piece instrument panel not the later 3 piece P-51D Panel. One lug is broken but as this is a rear fitted gauge this will not be seen 

Made by the US Gauge Company of New York. Would look good in that P-51 panel