Amateur mechanics ... a book for old and young who like to make things .. (1907)
Popular mechanics magazine, Chicago. [from old catalog] · Chicago, Popular mechanics · leaf 43
Details of Paddle Boat is used it should be exposed to theweather two or three months beforepainting or the paint will come off.spoiling its appearance. POPULAR MECHANICS Mow to Make ■ Hydrometer A home-made hygrometer, for de-termining tl • moisture inthe atmosphere, is shown in the ac-companying… … hold the silk thread, B. A of silk thread, C, is tied to thecenter of B and connects with an in-dicating hand <>r pointer supported bythe bracket, D. The axle on whichthe pointer revolves consists of a ■ I wood, about tlof a lead pencil, with a pin driven ineach end. A piece of tin, E, is cut…
Handicraft · Amusements
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