The boy's own book of indoor games and recreations : a popular encyclopædia for boys (1890)
Stables, Gordon, 1840-1910, Hutchison, George Andrew, 1841-1913 · Philadelphia : J.B. Lippincott · leaf 374
As seen from front. 30, 40, etc., to on which is shown the numbers 10, 20.indicate the pressure. A pin through the centre connects it withthe steam-funnel. The pin represents the steam-pipe. We nowrequire taps, which we make out of pins, by cutting off the headsand bending them at right angles…
Games · Amusements
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![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer01inte-410-160.webp)
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