The little gold mine. Conklin's handy manual of the mechanical arts and house plans .. (1889)
Conklin, [George W.] [from old catalog] · Chicago, Laird & Lee · leaf 125
Fig. I. … 125 loosens and detaches all the scale, and the plates are thencleaned by a solution of lime, which effectually removes anysurplus muriatic acid. If the plates are not wanted imme-diately, they can be protected from rust by a coat of turpen-tine and oil. If these precautions be not taken, the scale…
Industrial arts · Workshop recipes · Architectural drawing
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