Yee Mau 3 Way Triplet Hand Lens

A very unusual triplet hand lens providing three separate magnifications.  The triangular shaped body holds 10x, 15x, and 20x lenses that can be swung into the body for storage and protection.  Each lens is 16mm in diameter.  Focal length is 11mm for the 10x, 7mm for the 15x, and 5mm for the 20x.  Chrome plated metal throughout, with three lens corrected glass lenses.  Complete with leather case.  Shipping weight 1 lb.  Made in China.