An early 20th century brass and bronze parallel ruler with rollers by W. F. Stanley, Great Turnstile, Holborn, London. Circa 1910.
In original fitted mahogany box.
William F. Stanley of Great Turnstile, Holborn. (Mathematical, Drawing and Surveying Instruments) established in 1853.
Height: 5.5 cm | 2.25 in
Width: 64 cm | 25.25 in
Depth: 9.5 cm | 3.75 in
Weight: 3 kg.