nd car- facility and accuracy. viz., bearings having their axes placed at right angles ; but ried back to C, which brings 18, the sum of six and seven, to the vertical screws engage with the upper and lower halves The engravings give views of opposite sides of the machine, view at H. Two columns of… … 2; the next, those from 8 to 300, divisible by 3; and so on to the outer concentric row, which contains the numbers from This arrangement cnables the box to be made in halves An external rim or hoop, A, is fastened to a bifurcated 12 to 1,200, divisible by 12. As the revolving disk is rotated and…
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