Current meter with box designed by W G Price in 1885, made by W & L E Gurley, Troy, New York, USA, 1911-1913. Current meter with box designed by W G Price 1911-1913
Johnson type plane table outfit for comparatively high precision work, by W. and L.E. Gurley, Troy, New York, USA, 1914 Johnson type plane table outfit, 1914 1914