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PRISM BINOCULARS 
prism binoculars 
Optical instrument made up of two identical telescopes, one for each eye; it magnifies both near and distant objects.
Cylindrical body of the binoculars that houses the optical system and through which the light rays pass.
Ring on each eyepiece for manually correcting for the difference between the user’s eyes.
central focusing wheel
Focusing ring for both the objective lenses; it is used to manually adjust the sharpness of the image.
Optical disk or system of disks through which the eye sees the image produced by the lens.
Part of the frame joining the two telescopes.
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