Randy wrote: >Here is a link to a book from Fluke titled 'Calibration - Philosophy in >Practice'. A little dated (1980) but interesting to read. The second edition is updated and vastly expanded (544pp vs. 100pp for the 1980 first edition) -- it is an indispensable resource for anyone doing precision metrology. However, I know of no free on-line source and it is pricey, even used. Best regards, Charles