Verrill, A. Hyatt (Alpheus Hyatt), 1871-1954 · New York, Dodd, Mead and company · leaf 182
FulVc … each cross-piece on the disk, thus forming a tripodwith the disk resting on the ends of the legs.Through the hole in the centre of the disk dropa line with a weight on the end and mark the spoton the floor where it touches. With this for acentre move the legs out or in until each is equi-distant…
Carpentry
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