I am using a visual gage. We hold it up to the part and it either passes or fails this gage. Totally visual. No dimensions taken.
My question is how do I determine the accuracy of the eye. What error am I introducing into my measurement using these devices. They are adequate, but adequate...
Does anyone know of a standard or a best practice for tolerancing a visual gage. The gage is used in conjuction with an individuals sight to determine pass or fail condition. Even assuming perfect eyesight can you actually differentiate between 0.1mm, 0.01mm, 0.001mm, and 0.0001mm.
What can...
For Measurement Uncertainty you should reference TN 1297 from NIST and EAL-R2 "Guide to the Expression of Uncertainty in Measurement" (based on the GUM) replaced by EA-4/02 "Expression of the Uncertainty of Measurement in Calibration". Coverage factor is k=2 for measurement...
