This compass, with a face reading clockwise, reflects a British rather than an American design, and in Britain it would have been referred to as a “circumferentor.” W. & S. Jones were in business in London from 1791 to 1859, and at the 30 Holborn address from 1800 to 1859.
Ref: Gloria Clifton, Directory of British Scientific Instrument Makers 1550-1851 (London, 1995), p. 155.
