Toolpost Grinder

• One example - inner bore. Looks like accuracy is 0.0001" - dial indicator does not even move. Dial indicator apears to be .001" per marking.
• Super precision - see Air Bearing
• Inner grinder - [1]
• Converting a standard toolpost grinder to inner grinder - [2]
• Here is a precision toolpost grinder from scratch, 18+ part series - [3]