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
Engineer's transit theodolite, 6.5-inch, by W. & L.E. Gurley, Troy, NY, United States, 1911-1920. Fitted with Burt type solar attachment and accessories. Transit theodolite, American, 1911-1920 1911-1920
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