The tinman's manual and builder's and mechanic's handbook : designed for tinmen, japanners, coppersmiths, engineers ... with compositions and receipts for other useful and important purposes in the practical arts (1861)
Butts, I. R. (Isaac Ridler), 1795-1882 · Boston : I.R. Butts & Co. · leaf 38
it out into solder strips. TO FIND THE CENTRE OF A CIRCLE. 33 rO riXD THE CENTRE OF A CIRCLE FROM A PARTOF THE CIRCUMFERENCE. [Drawn for this work by L. W. Truesdell, Tinman, Owego, N. T.]Or-iginal.Fig. 21.Span the dividers any distance you wish, and place one foot on thecircumference AB, and… … 34 TO CONSTRUCT THE FRUSTUM OF A CONE. SECTOR, FOR OBTAINING ANGLES.Fig. 22. « JL -