We are an automotive ancillary unit using around 150 instruments like vernier calipers, micrometers etc. and around 2500 odd attribute gauges like thread ring gauges, plug gauges etc.. Measurement System analysis for all these instruments and gauges will be a cumbersome exercise. Can we group these instruments and gauges into types of instruments and conduct MSA for each type of instruments and gauges because repeatability and reproducibility depends more on the appraiser (or the inspector) and the relationship between the part (to be checked) and instrument rather than the instrument in isolation. Is my logic correct? If not , can anyone suggest a better method of conducting the study without affecting the performance of the gauge and also not affect the compliance to QS9000.