Elliott, Holborn, London, Length 325 mm, circa 1840
A rare proportional calliper used for enlarging or reducing three-dimensional measurements - with original box
Case: steel, partly nickel plated. Divided in nine proportional units for enlarging or reducing measurements.
William Elliott (1804-1849) was in business at High Holborn, London, from 1830 to 1849.
Case: very good, slightly worn