A George IV brass pantograph William and Samuel Jones, London, circa 1825 The pivoted frame with circular purple velvet covered anchor-weight fitted to an adjustable slider against engraved ratio scale to one arm opposing fixed pencil holder to the other, the centre with subsidiary pivoted armature with further adjustable slider against a similar scale for the tracing stylus and signed W & S Jones, 30 Holborn, London to the opposing member, fitted with removable bone wheel castors to each junction/terminal, in original mahogany box with tracing pointer and weighted pencil carrier, 71cm (28ins) long. The partnership between the brothers William and Samuel Jones is recorded in Clifton, Gloria Directory of British Scientific Instrument Makers 1550-1851 as operating from several addresses in Holborn, London 1792-1859 (including 30 Holborn 1800-1860). Condition report disclaimer
A George IV brass pantograph William and Samuel Jones, London, circa 1825 The pivoted frame with circular purple velvet covered anchor-weight fitted to an adjustable slider against engraved ratio scale to one arm opposing fixed pencil holder to the other, the centre with subsidiary pivoted armature with further adjustable slider against a similar scale for the tracing stylus and signed W & S Jones, 30 Holborn, London to the opposing member, fitted with removable bone wheel castors to each junction/terminal, in original mahogany box with tracing pointer and weighted pencil carrier, 71cm (28ins) long. The partnership between the brothers William and Samuel Jones is recorded in Clifton, Gloria Directory of British Scientific Instrument Makers 1550-1851 as operating from several addresses in Holborn, London 1792-1859 (including 30 Holborn 1800-1860). Condition report disclaimer
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.jpg "Source: Christie's")
.jpg "Source: Christie's")
.jpg "Source: Christie's")
.jpg "Source: Christie's")
