Lot Essay
Clifton states that James Gilkerson (fl. 1793-1830) was working as "James Gilkerson" and "Gilkerson & Co" at 8 Postern Row between 1809 and 1825, and records a pair of gunner's callipers made by him.
Details
A fine early 19th-Century brass pair of gunner's callipers,
signed Gilkerson Tower Hill LONDON, the joint with scales for Inches, 0° - 180° (twice), and Shot, the steel-tipped, shaped arms with scales on the upper side for Quantity of Powder for filling the Chambers of Brass Mortars & Howitzers on land and sea, Guns and Inches, the lower side with scales for Proof and Service for Brass Guns and Iron Guns, and Lin -- 12in. (30.6cm.) long extended
See Illustration
signed Gilkerson Tower Hill LONDON, the joint with scales for Inches, 0° - 180° (twice), and Shot, the steel-tipped, shaped arms with scales on the upper side for Quantity of Powder for filling the Chambers of Brass Mortars & Howitzers on land and sea, Guns and Inches, the lower side with scales for Proof and Service for Brass Guns and Iron Guns, and Lin -- 12in. (30.6cm.) long extended
See Illustration
Literature
Gloria Clifton and Gerard L'E. Turner (ed.) Directory of British Scientific Instrument Makers 1550-1851 (London, 1995)