Cyclopedia of mechanical engineering; a general reference work. Editor-in-chief Howard Monroe Raymond. Assisted by a corps of mechanical engineers, technical experts, and designers of the highest professional standing (1908)
American School (Chicago, Ill.), Raymond, Howard Monroe · Chicago American Technical Society · leaf 190
one smooth straight board called the mold board, the size of out-side dimensions of the flask. Roughboards or bottom boards of same sizeshould be provided, one for each moldthat will be put up in a day. Boards for snap work are madefrom -J to 1 inch stuff, and should have two stiff cleats, as shown… … Fig. 1. Suap Flask.
Mechanical engineering -- Dictionaries
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