Antique High Quality Surveyor Surveying Prismatic Folding Compass

Sophisticated and high quality folding surveyor prismatic compass. Made during beginning of XX century. Very sophisticated folding instrument with focusing stud, hinged stap, prisma, filters, and adjustable mirror. Screw hole down to use it with tripod. Screws and some parts made in bronze or brass. Lid to protect the instrument or to cover down side if you want to use it over a surface (without tripod). Unsigned but pretty sure made in Europe. Signals of use consisten with age. A really sophisticated prismatic compass for demanding collectors.

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