+6 Beecher Close Up Lens Cap: 8 Inch Working Distance

The Beecher Mirage glasses focus to about two to eight feet, but a near cap can be attached to one objective lens to allow the Beecher to focus at closer distances.

Lens Cap Attached:
* Working Distance: 8 Inches
* Magnification: +6 Diopter Lens Cap

Manufacturer: Beecher Research
Origin: USA