Donegan Optivisor DA-10 Headband Magnifier Visor with 3.5x and 4 Inch Focal Length

DA-10 Donegan OptiVISOR is a hands-free, headband binocular magnifier that has 3.5x optical glass lenses that are ground and polished into prismatic lenses for quality and clarity, and provides a focal length working distance of 4" other lenses are availa
DA-4 Donegan OptiVISOR is a hands-free, headband binocular magnifier that has 3.5x optical glass lenses that are ground and polished into prismatic lenses for quality and clarity, and provides a focal length working distance of 4 other lenses are available in varied magnification which provide specific magnification power (X) at specific focal lengths, or distance from object. The Donegan OptiVISOR is considered by many to be the finest headband magnifier available and has been proudly made in the USA for many decades and is highly durable and widely used in industrial and commercial applications.

Donegan DA-10 OptiVisor Headband Magnifier 3.5x Magnification 4 Focal Length 885115188580

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Donegan Optivisor DA-10 Headband Magnifier Visor with 3.5x and 4 Inch Focal Length

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Donegan DA-10 OptiVisor Headband Magnifier 3.5x Magnification 4 Focal Length