A Fraser Circular Slide Rule, English, early 19th century,signed Fraser London, silvered brass and brass dial centred by securing nut, in velvet lined red leather case, the dial 4in (10cm) diameter; together with a Chesterman's Patent Improved Cattle Gauge in red leather case with integral tape measure, note pad, pencil and set of instructions,
case 4in (10cm) wide
(2)
A Fraser Circular Slide Rule, English, early 19th century,signed Fraser London, silvered brass and brass dial centred by securing nut, in velvet lined red leather case, the dial 4in (10cm) diameter; together with a Chesterman's Patent Improved Cattle Gauge in red leather case with integral tape measure, note pad, pencil and set of instructions,
case 4in (10cm) wide
(2)
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