The foolproof method to correct the situation, is :
1)Containment action:
a)Stop production untill you get a correct instrument
b) inspect all the parts available in your custody.
c)Send an express message to your customer to hold all parts available with him
d)Rush to your customer premises and segregate those components.
2)Corrective action:
a)Calibrate the instrument in question and start production.
3)Prevention:
a)Calibrate more frequently
b)Check the instrument before each time it is used as we do in case of hardness testers and micrometers.
c)Introduce a 'Poka Yoke' if possible.
I HOPE THIS IS ENOUGH!.
V.J.Brahmaiah