Binoculars Ratings
Monday, September 12th, 2011![]() |
![]() 3x28mm Magnification Eyeglass Binoculars Observing Telescope US $6.99
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![]() MICROBIOLOGY MYCOLOGY TRAINING COURSE VALUE BUNDLE US $16.99
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![]() PARASITOLOGY STUDY OF PARASITES AND THEIR HOSTS COURSE US $7.95
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![]() Parasitology Research Clinical Training Book Course US $7.95
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![]() Lens 2in1 Cleaning Pen for Canon EOS 50D 40D 30D 20D US $1.10
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![]() Littlest Pet Shop Kangaroo Fish Postcard Pets NIP US $9.99
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![]() Microbiology Bacteria Training Course Value Bundle US $16.99
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![]() Parasitology Parasites Hosts Training Book Course US $7.95
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Bushnell Falcon 10x50 Wide Angle Binoculars (Black)
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Bushnell Powerview 8x21 Compact Folding Roof Prism Binocular (Black)
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Celestron SkyMaster Giant 15x70 Binoculars with Tripod Adapter
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Nikon 7234 Action 10-22 X 50mm Binoculars
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Binocular Astronomy (Patrick Moore's Practical Astronomy Series)
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what does the ratings or specs on binoculars mean?
I have a pair that says they are 8 x 21 and field 7 but i have no idea what that means?
8 refers to the power of the binoculars. They bring objects 8 times closer. 21 refers to the diameter of the objective lens in mm. 7 refers to the field of view in degrees. It is common currently to express field of view in feet per 1000 yards. 7 degrees is about equal to 365 ft at 1000 yards more or less. That is about average.
Binoculars
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US $6.99
























