Model DA-4 has a 254mm (10") focal length and 2x Power. The original OptiVISOR from Donegan Optical. Made in the USA.
This is a precision binocular headband magnifier which permits unrestricted user efficiency while reducing eye strain leaves both hands free and allows three dimensional vision.
Used by anyone whose profession or craft requires close accurate work.
Can be worn over prescription or safety eyeglasses.
Optical glass prismatic lenses: Ground and polished to precision optical standards bevel edged and mounted in an interchangeable plastic frame.
It tilts: Adjustable pivots allow the visor to be tilted out of the way when not needed and at your fingertips when you need magnification Adjustable headband: Conforms to fit all head sizes fabricated from a special blend lightweight material. Comfortable when worn for long periods of time.
High impact visor: Provides a tough, durable, always-new appearance Genuine leather comfort band: Padded orthopedic felt adds to comfort
Optivisor Binocular Magnifiers DA-4 2X FL 25cm
Model DA-4 has a 254mm (10") focal length and 2x Power. The original OptiVISOR from Donegan Optical. Made in the USA.