Our lab has adjustable thread rings on its scope of accreditation. When we were initially accredited, thestatistician the company used as a consultant (before my time) set the uncertainty for the rings at .0003". There was no budget made, per se. The value is derived from the X tolerance of the pitch diameter for the set plug used to set the ring.
In a recent assessment, the assessor asked to see the budget. No one had questioned it before... and whatever documents we had that explained it are lost to history.
Does anyone know of a reference that discusses this uncertainty? I don't mind leaving it at three tenths, but I have nothing to technically justify it beyond my own words.
TIA
In a recent assessment, the assessor asked to see the budget. No one had questioned it before... and whatever documents we had that explained it are lost to history.
Does anyone know of a reference that discusses this uncertainty? I don't mind leaving it at three tenths, but I have nothing to technically justify it beyond my own words.
TIA