Confident Instruments, Inc.

Precision/Tolerance (P/T) Ratio

The P/T Ratio is determined by:   P/T = 6 * measurement sigma / (Upper Control Limit  � Lower  Control Limit)

Highest Goal is to maintain P/T below 0.1

Secondary Goal is to maintain P/T below 0.3

P/Ts over 0.5 indicates ineffective measurement systems

The higher the P/T Ratio, the more producer and consumer loses.



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