Elliott, Holborn 倫敦，長度 325 mm，約 1840
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.
錶殼 非常好, 少有使用過