Antique Optometrist's Skiascope, French, Ebony, Optical Instrument, VictorianOur Stock # 18. 8136 This is an antique optometrist's skiascope rack. A French, ebony and glass optical instrument, dating to the late Victorian period, circa 1900. Fascinating instrument following the mid 19th century H. Parent principle Displays a desirable aged patina throughout Tactile ebony body presents dark hues with shaped edges Twenty four glass diopters, each in very good order Each rack with a plus or minus magnification from 0. 50 to 10