“[The screw machine] was on the principle of the gauge or sliding lathe now in every workshop throughout the world; the perfection of which consists in that most faithful agent gravity, making the joint, and that almighty perfect number three,… — David Wilkinson Copy Share Image
“[The screw machine] was on the principle of the gauge or sliding lathe now in every workshop throughout the world; the perfection of which… — David Wilkinson Copy Share Image