The length standards would be accurate, but how would you hold the depth mike and the standard to be square with something like a surface plate? A slight out-of-perpendicularity would introduce a large error for calibration purposes. I believe that I've seen step blocks for setting, but I don't think I'd pay real money for one for just occasional use. Gage blocks would be my choice.
Originally Posted by riceone
"I am often asked how radio works. Well, you see, wire telegraphy is like a very long cat. You yank his tail in New York and he meows in Los Angeles. Do you understand this? Now, radio is exactly the same, except that there is no cat." : Albert Einstein