Naval architecture: a manual on laying-off iron, steel, and composite vessels (1898)
Watson, Thomas Henry · London; New York: Longmans, Green and co., [etc.] · leaf 253
10 o bo … CD MISCELLANEOUS. Ill boards, like H in Fig. 106, with an open space P of about ^ of an inch,on a level with the bottom of the keel at various positions in thelength of the vessel, A, B, 0; and adjusting A and C until the sightholes are in a line with B and each other, and so that the sight…
Naval architecture -- Handbooks, manuals, etc · Naval architecture · Ships, Iron and steel
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