Workshop receipts
Workshop receipts is a technical recipe compendium compiled by Ernest Spon, Robert Haldane and Charles G. Warnford Lock, published in London and New York in 1883 for practical tradesmen and workshop users. Its pictures are precise line engravings of apparatus: a multi-part electrical machine with lettered parts, a glass-and-wire electrolytic cell in a tank, a covered vessel with fittings, and a adjustable clamping stand. A designer might take the clean, labelled diagram style, its hatching and lettering conventions, and its mechanical geometry.
