In house calibration - Our CMM's are outside certified can I use them to certify our standards

#1
Greetings,
I have been hired by a manufacturing company to assist in their path to AS9100 certification. One of the hats I have been asked to wear is in house calibration. Most of our inspection is done with outside certified CMM's, my question is since our CMM's are outside certified can I use them to certify our standards then use those standards to calibrate our micrometer's and calipers? Thank you in advance for the assistance
 
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#4
I am going to throw in a curve ball based on the knowledge I have.

The CMM we own is only accurate to about .0003". We calibrate our micrometers to ±2 readings and we have some Mitutoyo micrometers that can read to ±.00005" so we would calibrate these to ±.0001. For about 90% of our calibrations, we use precision gage blocks that are only used for calibration and get sent out to a calibration house once a year. The tolerances on the gage blocks are +.000008/-.000004.

I guess it really depends on how accurate you need your micrometers to read.
 
#5
I am going to throw in a curve ball based on the knowledge I have.

The CMM we own is only accurate to about .0003". We calibrate our micrometers to ±2 readings and we have some Mitutoyo micrometers that can read to ±.00005" so we would calibrate these to ±.0001. For about 90% of our calibrations, we use precision gage blocks that are only used for calibration and get sent out to a calibration house once a year. The tolerances on the gage blocks are +.000008/-.000004.

I guess it really depends on how accurate you need your micrometers to read.
I love curve balls lol. I appreciate your take and will proceed with this in mind as well. Thank you!!
 
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