Discussion on all milling machines vertical & horizontal, including but not limited to Bridgeports, Hardinge, South Bend, Clausing, Van Norman, including imports.
Just like cross-slides and compounds, boring heads can be found that the dial shows how much the head moves, or how much your hole diameter will change.
I think the direct-reading would be preferable for two reasons: one is that you are reading exactly how your work will be affected and two, you will have twice the number of marks, so it will be easier to see a thou of diameter change (on the other kind, a though is halfway between the marks).
Steve
Yes....good point!
I have two 2" boring heads. One is direct reading, the other not. You would think it's no big deal, but the non-direct one is a real pain to tune in to get that last thou.
