Vintage Abrams CB-1 2-4 Stereoscope with Case & Manual USA Made

Hard-to-find vintage Abrams Instrument Corporation 2-4 Stereoscope, Model CB-1. Made in Lansing, Michigan, USA. Includes original molded case and operating instruction sheet. Precision optical instrument used for stereoscopic viewing of aerial photographs. Foldable arms for two or four power magnification Interpupillary adjustment and head rest Sturdy molded plastic frame in military blue Case has secure snap closure with molded handle grip Approximate Measurements: Length (closed): 7" Width (closed): 4.5" Height in case: 2.5" Weight: 1 lb 13.4 oz (including case) Perfect for collectors of military, surveying, or scientific instruments. Very good vintage condition. Light signs of wear on lenses. Case shows light scuffs. Complete with instructions. Snap does not close easily.