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 47
he iron. The magnet Bhouldthen be placed in the bottom of thecan in an upright position and enoughof a melted mixture of beeswax andresin poured in to hol3 it in position.While the wax is -till in a plasticcondition the magnet should be Locatedcentrally and adjusted bo thai the endwill be h in. or… … An accurate rain gauge may beeasily constructed from galvanizediron, as shown in the sketch herewith.The funnel, A, 01 e r 1 a p s andrests on thebody, B, and dis-charges into thetube, C, the areaof which is 1/10thai of the top of the funnel. The depth of the water in ( is thus ten times the actual…
Handicraft · Amusements
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