Handbook for carpet measurers, cutters and salesmen (1905)
Lind, John W[ilhelm], 1861- [from old catalog] · New York, G. Lundoe, The American carpet and upholstery journal · leaf 72
METHOD 4. MMETHOD 3. Method 4From any scale of equal partson the tapeline, set off from R toB three such parts, with R as cen-ter and four parts as radius swingan arc. B as center and five partsas radius, describe an arc cuttingthe former in A. A line drawnfrom R to A is the perpendicular. 58…
Carpets
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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-56-31.webp)
