1889, black, serial no. 8243, with Ross f/8 lens, body, VG, shutter working, lenses, VG, some light cleaning marks, complete with a spare film magazine and attachements to convert into a conventional pair of binoculars About the Photoscope: The device is constructed in the form of field glasses, featuring a removable objective lens and a roll-film holder capable of capturing twenty-four images measuring 3.5 × 4 cm within one tube. The other tube contains a viewing lens, ground glass screen, and magnifier. Each component is interchangeable with standard binocular eyepieces and objectives. The objective and viewing lenses, along with an inter-lens shutter, replace the standard eyepiece unit and integrate with the focusing tubes. As a result, the camera must be focused and operated with the eyepiece end facing the subject. The shutter is tensioned using a wheel and activated by a lever positioned between the two tubes. This camera is based on patents Nos. 8378 (1889) and 2725 (1891), filed by William Sanders, and was produced by Ross from 1892. The present example features a shutter mechanism that represents an improvement over the two designs illustrated in the original patents, which may not have been manufactured in practice. Ross advertised the camera as an attachment compatible with any of their binoculars, priced between £4 10s and £6, with an additional charge of 5s for fitting to binoculars by other makers. A complete Ross cased outfit was offered at 12 guineas (£12 12s). References: British Journal Almanac, 1893, p. 83 Photography Annual, 1893, p. 365; 1895, p. 403; 1896, p. 362 Les Appareils Photographiques d’Espionnage, Michel Auer and Eaton S. Lothrop, 1978, p. 64 Cameras, Brian Coe, 1978, p. 56

In the form of a field glass with removable objective lens and roll film holder for twenty four 3.5 x 4cm pictures in one tube and viewing lens, ground glass screen and magnifier in the other, each camera component numbered 6341 being interchangeable with standard binocular eyepieces and objectives. The binocular body numbered 6-5999. The objective and viewing lenses with between lens shutter replace the standard eyepiece unit with the focusing tubes. The camera must thus be focused and used with the eyepiece end towards the subject. The shutter is set by a wheel and released by a lever between the tubes. The camera is in excellent condition with maker's case labelled 'Ross & Co. 111 New Bond St. London' and with a more used matching pair of Ross binocular eyepieces and focusing tubes and unused film cartridge.