Look at the pictures, apparently it monitors vacuum levels. selling as is,no return, no warranty.
CVC GTC-004 Thermocouple Vacuum Gauge Tube
Supplying reliable vacuum equipment since 1976. Since 1976, Duniway Stockroom has provided new and used vacuum equipment to universities, government laboratories, OEMs, Fortune 500 corporations, and s ... More
Thermocouple Immersion, Part #565530, nsn 6685-00-984-0974
Thermocouple Immersion Part # 565530 Alt. part # HAC12490 6685-00-984-0974 Immersion length - 1.540 inches nominal Wire AWG size - 18 Unit type - shielded Terminal type - 2 threaded stud Material - ma ... More
Vintage Thermocouple Vaccum Gauge with Case
Robinair Thermocouple Vaccum Gauge, Comes in a hard case, Leather like Material. is coming apart at seams. unknown working condition on gauge. unable to test.