Mark II Magni-Focuser Headband Magnifier adjustable headband; flip-up magnifier Exclusive single clear-view lens without centerpost, which increases the viewing area about 20%. Shatter resistant optical lens for safety.Lens size: 3-1/8" x 1-1/8" (79 x 29mm). Prod. No. Power Focal Range 7252 1.75x 14" (36cm) 7254 2.25x 8" (20cm) 7257 2.75x 6" (15cm) Light Weight Headband, Flip Up Magnifier Velcro-type adjustable, comfortable headband, easy flip up Extremely lightweight and sturdy construction Interchangeable lens plates, no tools required Lens plates separately available Large lens area Optical quality acrylic lenses with an abrasion resistant hard coating Swings out of way when not in use No tunnel vision; You can see your work area Prod. No. Power Focal Range Lens Plate 744-3 1.75x 14" (35cm) No. 3 744-5 2.25x 8" (20cm) No. 5 744-7 2.75x 6" (15cm) No. 7
