http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
containing, the description and use of a new-invented instrument, for preventing frauds by counterfeit gold
"The instrument is neatly made in brass, and very easily portable in the pocket ... Any person, by sending to the authors, may have an instrument made to weigh and prove any larger coin or utensils of gold or silver, than this instrument is design'd for."
Abstract of His Majesty's royal letters patent: pages [1]-[4].
Reproduction of original from Goldsmiths' Library, University of London.
Electronic reproduction. Farmington Hills, Mich. : Thomson Gale, 2005. (The making of the modern world). Available via the World Wide Web. Access limited to licensing agreements. s2005 miunns
Making of the modern world (Goldsmiths'-Kress Library of Economic Literature)