The art of measuring made easy by the help of a new sliding rule, which performs the same at one operation, ... By W. Bradford, R. Darby, and J. Hulls - Bradford, William teacher of mathematicks (printed by J. Keating, 1761)
English Short Title Catalog, T118431
Reproduction of original from British Library
The cover title reads: 'By virtue of his Majesty's Royal letters patent. Granted unto W. Bradford, .. [i.e. No.686 of 1753]'
With an initial leaf of patent: 'Abstract of his Majesty's Royal letters patent. George R. .. Whereas W. Bradford, .. '
Keywords: Mathematical instruments -- Early works to 1800; Slide-rule -- Early works to 1800