The life, times, and scientific labours of the second Marquis of Worcester : to which is added a reprint of his Century of inventions, 1663, with a commentary thereon (1865)
Dircks, Henry, 1806-1873 · London : B. Quaritch · leaf 460
, Ten Tunne with tenpounds, and lefs ; the faid ten poundsnot to fall lower then it makes theten Tunne to advance or retreatupon a Level. \_A most easie level Drcmglit\ The weight is in thiscase to be moved with a most inconsiderable strength.Ten pomids, or less, are to be capable of moving22,400…
Worcester, Edward Somerset, Marquis of, 1601-1667 · Inventions · Industrial arts -- History
Internet Archive · Kelly Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
