Vintage Caterpillar 2R1361 temp gauge&sensor drive train replacement part

1968 vintage new old stock replacement part for a Caterpillar engine system or drive train. This is a control panel temperature gauge and thermometer with sensing cable. This is Cat part number 2R1361 (we know because it is the same as one we have from the same estate that still has the box). The gauge reads Converter Temp and is marked with a temperature range from 140 to 275 degrees fahrenheit.

We've been told that it is to measure the internal temperature of the torque converter between the engine and the transmission, but we're not sure. If you need this part, you probably know a lot more about it then we do.

We're not sure what Caterpillar engine or drive train this gauge and sensor are for, whether it is for their agricultural line of tractors or their large industrial and construction equipment, bulldozers, end loaders, earth movers etc.

It is from the estate of an industrial engineer.