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The 28mm Viper R/T 
binocular is equipped with 
the Vortex R/T Ranging 
reticle, designed to assist the 
user in calculating distances. 

Binocular Adjustments  . . . . . . . . . . . . . . . 3

Using the Viper R/T Reticle . . . . . . . . . . . . 6

Caring for the Lenses . . . . . . . . . . . . . . . . 11

Accessories . . . . . . . . . . . . . . . . . . . . . . . . 12

Vortex Service and Repair Policy . . . . . . . 14

With a tough and durable roof prism design and brilliant 
optics, the Viper   R/T 
can be relied on in the 
worst conditions thanks to 
Vortex’s premium XD glass 
and XR lens coatings.

® 

Summary of Contents for Viper 8x28 R/T

Page 1: ...ng distances Binocular Adjustments 3 Using the Viper R T Reticle 6 Caring for the Lenses 11 Accessories 12 Vortex Service and Repair Policy 14 With a tough and durable roof prism design and brilliant...

Page 2: ...unglasses roll down the eyecups Without eyeglasses or sunglasses keep the eyecups fully extended Adjusting the Eyecups Adjusting the Interpupillary Distance The interpupillary distance IPD is the dist...

Page 3: ...er until the object is in focus Make note of this diopter setting in case you need to set it again From this point on you will only need to use the center focus dial The reticle focus is located on th...

Page 4: ...mon objects in your vicinity and their measurements The Viper R T reticle also uses a secondary system of quick ranging based on a human silhouette See the section on Quick Ranging with Silhouettes 1...

Page 5: ...x 1000 4 mrads 500 Yards Range Yards Target Size Yards x 1000 Measured mrads Be sure the reticle is in focus before ranging see Adjusting the Reticle Focus Using either the vertical or horizontal mrad...

Page 6: ...based on an average 20 inch shoulder width and 11 inch head width To use simply match the person being ranged to the closest silhouette in shape and read the indicated yardage As before best accuracy...

Page 7: ...ccessories Attach the padded neckstrap to the binocular in three simple steps Begin with the right barrel of the binocular and repeat the process for the left barrel The Neckstrap 1 Push a few inches...

Page 8: ...ward and simple Rest assured if this binocular should ever require repair all you need to do is contact Vortex for absolutely free service Call 800 426 0048 or e mail service vortexoptics com Uncondit...

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