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This video looks at how to use the graduated collars on a milling machines lead screws to accurately position multiple holes on work parts on milling machines not equipped with a digital readout. I produce these shorter than usual videos to answer viewer questions about machining. As for all thatlazymachinist videos, this video is aimed at the novice machinist who wishes to develop proper basic work skills. MARC LECUYER, thatlazymachinist.com