John Jacob Holtzapffel · digital reprint by www.CircuitousRoot.com · leaf 77
en the tee was withdrawn from the pedestal by a screw with a capstan head about the same diameter as that of the stem, tapped into its lower end. The revolutions of the mainscrew were observed by means of a micrometer head fixed upon it at the same end as the winch handle, the divisions marked upon… … quently engraved with a scale of inches and subdivisions to assist to determine the amount of the lateral traverse of the tool. The tool slide was advanced and withdrawn from the work either by means of a vertical knob or handle fixed upon it towards the back end as in fig. 10, or by a detachable…
Ornamental turning
Internet Archive · Dr. David M. MacMillan · Public Domain Mark 1.0. Free to use for anything.
