Antique Stereo Microscope made by Chicago Apparatus Co.. Designed for low magnification observation of a sample. Used for examinations of solid specimens with the added advantage of seeing the specimen in 3D. Internet search indicates they were made between 1910 and 1930. Measures 9 1/2" x 3" x 3 1/4" at its highest point. Complete and in nice shape. Cash Only Sale. Local sale within Monroe County NY. I will not mail the microscope but I will meet you at a mutually agreed upon time and place within the county so you can throughly inspect it before deciding.