Carter Thermoquad, TQ main jets. Jets can be stamped with the size. When no stamp measure the hole with a hole gauge, or numbered drill bit. Convert the drill bit size over to decimal. The sizes are listed in the drop down list and are listed by hole size in thousands.
Thermoquad, TQ Main Metering Jets
Carter numbered the primary jets, using the last 2 or 3 numbers as the
size of the jet. Example 120-4095 = .095, 120-5001 = .101
The Thermoquad does not use secondary jets.
Metering rods are 3 step: Example 70 x 46 x 40