Van Cort Instruments Polemoscope, or "The Private Eye"
The original paper is included with this product. It says, "The Private Eye. The Private Eye, a polemoscope, is an optical device which allows you to see with a diagonal perspective. This instrument dates back to the opera houses of the late 1700s where it was used to observe activities other than those of the stage. Two solid brass endcaps encase a dyed, laminated birch turning, and the entire piece is handmade in our workshop. A first-surface mirror gives you a clear 90 degree angle view. Take it to the opera...to the beach...to parties...to work. People-watching has never been so discreet. VAN CORT INSTRUMENTS, INC. NORTHAMPTON, MA 01060 USA 1992."
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Van Cort Instruments
{"Manufacturer": "Van Cort Instruments", "Date First Available": "January 11, 2014"}