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 38
e-comes eaten away the remaining part canbe used againby suspendingit from a wireas shown inthe cut. Besure and havea good connec-tion at thezinc binding-post and coversame withmelted paraf-fin. This pre-vents corro-3 i on whichwould other-wise occurfrom the action of the sal ammoniac or… … lMHTLAR MECHANICS
Handicraft · Amusements
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