A specification for a widget is 10 +/- 1 units and the specification also requires that "measurement capability meets or exceeds a 4:1 ratio between the product tolerance and the certified accuracy of the measurement device". Measuring device "A" has a certified accuracy of +/- 0.5 units.
Does measuring device "A" meet the specification?
Or does the measuring device need to have a certified accuracy of less than or equal to +/- 0.25 units?
Can you provide a published source that clearly demonstrates the correct technique?
Does measuring device "A" meet the specification?
Or does the measuring device need to have a certified accuracy of less than or equal to +/- 0.25 units?
Can you provide a published source that clearly demonstrates the correct technique?