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- Feb 1, 2015
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According to the manual, the dials read in both inch and metric. It appears that the dial readings are exact for inch and approximate for metric, indicating that the lead screws are Imperial rather than metric. The cross feed is reading in diameter mode so an advancement of .002" will move .001" but it will reduce the diameter by .002". This would indicate a 25 tpi lead screw. The compound moves .050" per revolution or .001"/division. and has a 20 tpi lead screw.
One thing to be careful of when working in metric is if you are going by the dial reading, you will overshoot slightly so don'ttry to go to your final position by the dials. Stop short and measure and determine what your final change will be. (With metric leads screws reading inches on the dial, you will undershoot which is safer.)
One thing to be careful of when working in metric is if you are going by the dial reading, you will overshoot slightly so don'ttry to go to your final position by the dials. Stop short and measure and determine what your final change will be. (With metric leads screws reading inches on the dial, you will undershoot which is safer.)