A practical work-shop companion for tin, sheet-iron, and copper-plate workers ... with numerous valuable receipts and manipulations for every-day use in the work-shop (1904)
Blinn, Leroy J. [from old catalog] · Philadelphia, H. C. Baird & co. · leaf 29
Fig. 6. and LK, describe the arcs IK and GH ; set off IK equalto FDG in Fig. 5, draw the lines GI and HK, cutting thecentre at L. Edges to be allowed. The taper must be equal on all sides. 6 TIN, SHEET-IRON AND COPPER-PLATE WORKER. … OVAL. 7 To describe a Pattern for a Tapering Oval Article^ to bein Two Sections.—Describe the bottom, the length andbreadth required as in Fig. 8 ; then describe the body as inFigs. 9 and lo. Describe the right angle ABC, Fig. 9 ; make BE the alti-
Metal-work
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![An illustration from Nicolai Copernici Torinensis De reuolutionibus orbium coelestium, libri VI : Habes in hoc opere iam recens nato, & aedito, studiose lector, motus stellarum, tam fixarum, quàm erraticarum, cum ex ueteribus, tum etiam ex recentibus obseruationibus restitutos: & nouis insuper ac admirabilibus hypothesibus ornatos. Habes etiam tabulas expeditissimas, ex quibus eosdem ad quoduis tempus quàm facillime caculare poteris. Igitur eme, lege, fruere. [Line in Greek] (1543)](https://img.insideoutlibrary.com/img/200/ia-nicolaicopernici00cope-259-164.webp)
