Elementary principles of carpentry ... : ; to which is added an essay on the nature and properies of timber (1840)
Tredgold, Thomas, Barlow, Peter · John Weale · leaf 322
of them ) of an inverted concave conoid . In order to place this in the clearest point of view , D , fig . 1 , is Supposed to represent a figure of this form in per spective standing on its base , the base being prevented from spreading . The dark lines shew the conoid partly constructed , and the…
e-rara · ETH-Bibliothek · No known copyright restrictions. Free to use for anything.
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