4.4.3. Inspection or checking time. Inspection, checking measuring or gauging time depends upon : the type of the operation performed; type of the measuring or checking device, the precision of the work surface etc. The time allowance for checking or specific dimension, may be obtained from the following equation.
t_(c ) = -T_c/(N+1)
Where T_c = Total time required to check this dimension for all the parts.
N = number of parts
Or, t_c=F × T_c
Where F is the frequency of checking a dimension.
If the value of T_c is computed for other dimensions, their sum will give the total time required to check or guage all the dimensions for all the parts in a lot. Thus, from equ.
T_c = t_c (N+1)