The art of dialling : performed geometrically ... arthmetically ... instrumentally ... (1700)
Leybourn, William, 1626-1716 · London : T. Braddyll · leaf 58
4 6 Geometrical Dialling. Eaft Dial, was drawn on the right hand of the Plain, in the Weft it muft be drawn on the left hand, and the Hour¬ lines of 4, 5, 6, 7, 8, 9, io, and n, in the Forenoon on the Eaft Dial, muft be 8, 7, 6, 5, 4, 3, 2 and 1 in the Af¬ ternoon, upon the Weft Dial, as in the… … The Stile of the Eaft or Weft Dials, may be either a ftrait Pin of the juft length of the Line H O, which is equal to H L in the Eaft Dial, fixed in the point H, upon the Hour-line of 6, and exa&ly perpendicular to the Plain, (hewing the Hours by the ftiadow of the Apex, or very top thereof Or, it…
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