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Mechanical applicances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical mvements, powers and devices"; (1917)

Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing company · leaf 181

An illustration from Mechanical applicances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical mvements, powers and devices";, 1917, leaf 181
urther protectedby a metal screen fixed on the holder.He looks at his work through a darkglass, which protects both his eyesand face from the radiated light andheat better than ordinary dark spec-tacles would do. The lungs also mayneed protection from the vapors ofcopper, lead, and other metals… … ELECTRIC POWER AND DEVICES. 177

Mechanical movements

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