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Books Books 1 - 1 of 1 on And may be made of any kynde of glasse, but the clearer the better. And so the Glasse,....
" And may be made of any kynde of glasse, but the clearer the better. And so the Glasse, after that yt ys full rounde, ys made fast with syman vppon a smalle block, and so grounde by hande, vntill that yt ys bothe smoothe and allso thynne, by the edges,... "
Descartes and the Hyperbolic Quest: Lens Making Machines and Their ... - Page 13
by D. Graham Burnett - 2005 - 152 pages
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Ad librum de naturis superiorum et inferiorum (prefatio)

James Orchard Halliwell-Phillipps - Algorismus - 1839 - 120 pages
...the glasse. And first for makinge of the smallest sorte of them, commonly called spectacle glasses. These sortes of glasses ys grounde vppon a toole of...concave inwardes. And may be made of any kynde of glasse, but the clearer the better. And so the Glasse, after that yt ys full rounde, ys made fast with...
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