Donegan DA-10 OptiVisor Headband Magnifier, 3.5x

Donegan DA-10 OptiVisor Headband Magnifier, 3.5x Magnification, 4" Focal Length (working distance 101mm)

The ever-popular OptiVISOR® is the first choice of many jewelers. Interchangeable, lightweight glass lens plates are ground and polished to prismatic optical standards to provide clearer, sharper optics. Self-locking dial adjustment provides a good fit on any size head and over eyeglasses. Genuine leather comfort band makes OptiVISOR more comfortable than other magnifying visors. Adjustable tension pivot assembly keeps visor in desired position. This OptiVISOR includes one 3.5X (#10) lens plate; additional lens plates are available to enable optimal magnification on a variety of tasks.

Please note:
For best results, choose the lens the with the lowest power necessary to accomplish your task. This is because the greater the magnification you use, the shorter your focal length will be and the smaller your field of view will be. Choosing the minimal magnification ensures the best possible field of view and focal length as you work.

Please note that you are purchasing a Genuine OptiVISOR (by Donegan USA). Donegan Optical Company has been in business over 60 years and is known for its consistent quality and precision optical products. All lens and loupes are designed and manufactured in the United States.