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, d. 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 802
that,confifts of a box and needle ; the prin-cipal difference being this, that, intteadof the needles being fitted into the card,and playing with it on a pivot, it hereplays alone. This inftrument is of manifeft ufe totravellers, to direct them in their road jand to miners, to fliew them what wayto… … COM t %9 3 COM the articles Surveying, Dialing, ClRUMFERENTOR, &C. Azimuth Compass. See the article Azi-muth Compafs. This inftrument confifls of a card, mov-ing in a box, like a mariners compafs :and on the top of the box, is a concen-tric circle of brafs, plateXLVI. fig. 4. onefemicircle…
Art · Science
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