I am currently using a DEA manual 07 07 05 with Tutor/Windows 95.

In measuring a part (about 15 features) one of the measurements, simply a "Y=meas" dimension, in the YZ plane is misreported. Nominal is from 1.4 to 0.7, depending on the particular part of a family of parts, but the dimension is often reported 0.3 to 0.7 greater than actual - never lesser. Actual can be verified by measurement with a micrometer.

Anybody care to venture what is happening?? How to overcome it? It has been doing this for a couple of years, here and there, now and then, to this part and that. Hits ARE accurately taken. This happens to all operators, at some time or another. Might repeat a dozen times in a row, might not appear for weeks.

Another issue, sometimes this thing will (on that same simple part) misplace its "X" zero, always away from home, toward the operator, and never less than 1.3", never greater than 3.7". Again, the unpredictability equal to the first problem. I somehow think this one is a tip-file issue, as it only makes itself manifest after a probe rotation from A90/B90 to (position 1)A0/B0.

I'm open to hints. I'll try most anything.

Thank you , in advance.

Bob Ranck, T.B.Wood's, Chambersburg, PA