1970 Series, 36" Thermocouple, 20-30 Mv Coaxial Thermocouple Threads = 11/32"-32. Southbend Grill Series: Sg & Where Applicable. Oven Convection & Deck Ovens Where Applicable. Thermocouple Adaptor, N107, # 721003 Thermocouple Adaptor For Closed Circuit Test Of Thermocouples Using A Suitable Millivolt Test Meter. Analog Multi-Tester Meter N112, # 721008