LEICA TPS1200 - Manual (Page 105)

Check & Adjust TPS1200 105
Next step
IF the results are THEN
to be stored CONT (F1) overwrites the old tilting axis error with the new
one.
to be determined
again REDO (F2) rejects the new determined tilting axis error and
repeats the whole procedure. Refer to step 3. of paragraph
"Determination of tilting axis error step-by-step".