A new and complete dictionary of arts and sciences : comprehending all the branches of useful knowledge, with accurate descriptions as well of the various machines, instruments, tools, figures, and schemes necessary for illustrating them, as of the classes, kinds, preparations, and uses of natural productions, whether animals, vegetables, minerals, fossils, or fluids : together with the kingdoms, provinces, cities, towns, and other remarkable places throughout the world : illustrated with above three hundred copper-plates, engraved by Mr. Jefferys, geographer to His Majesty : the whole extracted from the best authors in all languages (1763)
Society of Arts (Great Britain). Society of Gentlemen, Jefferys, Thomas, -1771, Grignion, Charles, 1721-1810, Wale, Samuel, d. 1786, Owen, W. (William), d. 1793 · London : Printed for W. Owen, at Homer's Head, in Fleet-Street · leaf 750
fourth thefame diftance to the right of the third aand this two inches and a half muft becarefully meafured from the center ofone hole to the center of the other. EacHof thefe holes is a mortoife of an incnand a quarter wide, and is three incheland a half long at the top, and thralinches at the… … ./ftfhytrtf PLO wedged tight up by pieces of wood. Thecoulters are two feet eight inches long,of which fixteen inches are allowed forthe handle, which is to be thus longthat the coulter may be drawn down asthe point wears away. As to the wheels,the left-hand wheel is twenty inches di-nmeter, and…
Art · Science
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