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Scientific American, Vol. 80, No. 11 (1899) (1899)
leaf 3
nuous rotation of a are crushed and the mirrors are taken out. They are of the mirror as bright lines upon a moderately bright single crank at the side (in our engraving the left side) then scoured and filed until they are roughly finished, ground. These are so-called Japanese ‘magic ” mir- of the… … the hand-crank of a pound. © 1899 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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