Old factory Stereometer Visual Examination Instrument and Stereogram Testing Plates. Manufactured by Stereosette to test people who would likely benefit from a detailed eye examination. Was typically used in industrial setting to test the eyes of workers employed for close up and detailed work. Comes with original wooden carry case and includes 8 testing plates, manual, pointer and a pad of efficiency record sheets for recording test results. Dates to around the 1950’s, I had great fun following the manual to test Hyde. The Case which is quite worn measures 37 x 22 x 16cms. Very sturdy industrial Stereometer certainly built to last.