During a PR a question was asked "How is the 2:1 TAR calculated in Table 3"?
The 2 & 4 foot ranges have an accuracy listed of +/- 0.001" with a TAR of 2:1.
The optical micrometer has a minimum use accuracy of +/- 0.001".
Table 1 for the Multi-target collimator list target alignment as +/- 0.002" from less than 50 ft to 0 ft.
Some procedures do not give enough detail to explain what the AFMETCAL engineer did in the procedure. AFCAV Table 1 may have some notes. There may be guard banded limits in the test that could give a TAR of 2:1 when the equipment specification and standard specifications are close.
If you can not answer the PR question easily, or are not 100% sure, it is always good to seek another technician or supervisor to look over the k-pro question.
If no one in lab knows and the procedure is not clear I would send a note to the AFMETCAL engineer for that K-pro and ask a short clearly stated question on the measurement in question. If you ask to many questions at once the one you need may get overlooked, the engineers are very busy and sometimes scan and reply quickly so a nuance in your question may be missed. If you do not get a reply in a reasonable time give them a call.
It may be the procedure is incorrect. I have found many procedures where a change to the test instrument or standard specification invalidated a TAR or test table limit.
Be sure if any problem is found to get a correction submitted right away. A correction might include a note that would clarify the 2:1 TAR statement if everything else is correct.