A
If an operator inadvertantly sets the zero on his calipers and makes bad product that goes unoticed until the next operation or worse shipped to a customer our NCP procedure would activate an investigation. If it could be determined that the operator used the instrument incorrectly, the corrective action procedure would kick in and the corrective action would state training in proper use of measuring instruments is required.
I would never say that Starret tools or Brown & Sharpe or any others make a product which is faulty or not acceptable. To remove adjustability from a measuring tool you would have to have solid measuring for everything you measure. There is nothing stopping someone from using a tool incorrectly other than training. If your operators do not understand how to use a pair of calipers properly train them or take the calipers away.
I would never say that Starret tools or Brown & Sharpe or any others make a product which is faulty or not acceptable. To remove adjustability from a measuring tool you would have to have solid measuring for everything you measure. There is nothing stopping someone from using a tool incorrectly other than training. If your operators do not understand how to use a pair of calipers properly train them or take the calipers away.