DIAL ADJUSTABLE CONTINUOUS HEADBAND - Specially formed to fit. A simple twist of the adjusting dial changes head size. Sealed-in mechanism is self-locking and trouble-free. Gives better balance and even more comfort. IT TILTS - Adjustable pivots make the OptiVISOR unique - and the most handy magnifier yet. It's up, out of the way of normal vision when not in use, and there at your fingertips when you need it for magnified pinpoint clarity back at the job. CONFORMING HEADBAND - Of electrically nonconductive ABS material. Designed to fit and locate the scope in a natural, comfortable position. Total weight just 4 oz. So light you hardly know it's there. GENUINE LEATHER COMFORT BAND - Padded with orthopedic felt, making the OptiVISOR the most comfortably worn magnifier available. ABS HI-IMPACT VISOR - This tough, durable material is practically indestructible, yet always keeps its new appearance. OPTICAL GLASS LENSES - Ground and polished to precision optical standards. Beveled edges and mounted in interchangeable plastic frames. Five scientifically computed prismatic powers are available for use with any OptiVISOR FITS OVER REGULAR GLASSES - No need to take them off with the OptiVISOR.

SPECS: No. 2, 1 1/2 at 20" (51.0cm); No. 3, 1 3/4 X at 14" (35.6cm); No. 5, 2 1/2 at 8" (20.3cm); No. 7, 2 3/4 X at 6" (15.2cm); No. 10, 3 1/2 X at 4" (10.2cm).