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
"Opportunity is missed by most people because it is dressed in overalls and looks like work." Thomas Edison