Woodwork for secondary schools; a text-book for high schools and colleges, prevocational and elementary industrial schools (1916)
Griffith, Ira Samuel, 1874-1924 · Peoria, Ill., Manual Arts Press · leaf 342
d beequal to j^ times the diameter of the core. The depth ofthe drag print should be equal to f times the diameterof the core. For vertical prints larger than \V in diam-eter the length ofcope print may be Vand of the drag print1^. The diameterof the cope print atthe small end may be^ less than… … 338 WOODWORK FOR SECONDARY SCHOOLS.
Woodwork (Manual training)
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