our blank sheet measures everything except the blank

We retained the blanks, but the old rows aren't linked to individual pieces. I can start a current comparison. I can't reconstruct those pairings honestly.

Then leave the old rows inconclusive. Also establish which surface was used as the exposed-length reference before comparing operators.

Did the two operators measure from the same place, Ben, or is that unknown too?

One used the machined face, the other the edge of a removable guard. We have two methods under one heading. Rather impressive for such a short sheet.

Agree one measurement reference with quality and the machine owner for the new comparison. Keep the old method difference noted; do not move the old numbers around until they look consistent.

And check the end of each blank that contacts the stop, with its identity kept through the observations. A burr or different preparation route could matter.

Two saw batches found in the same bin. They've been separated and tagged. The new sheet pairs blank length and exposed length, with the contact-end observation alongside.

Quality and the setter have agreed the current method. The comparison is arranged, not completed. No automatic-loading adjustment is being derived from the old figures.

Will both saw batches be included under that same method? That should help avoid replacing one mixed account with two results that still cannot be compared.