The carpenter's and joiner's hand-book : containing a complete treatise on framing hip and valley roofs ... (1888)
Holly, H. W. (Henry Wells) · New York : John Wiley & Sons · leaf 32
Fig. 16. Upon two points nearly opposite eachother, as J (Fig. 16), draw the two partsof circles, cutting each other at c d; repeatthe same at the points e f; draw the twostraight lines intersecting at which willbe the centre required. HAND-BOOK. 20. Another method. 27 … Fig. 17. Lay a square upon the circle (Fig. 17),with the corner just touching the outer edgeof the circle. Draw the line a i across thecircle where the outside edges of the squaretouch it. Then half the length of the line a1) will be the centre required. No matterwhat is the position of the square,…
Carpentry
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