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2.50 Bi Focal Glasses Popular Q&A

Q: What Are Bifocal & Trifocal Glasses?
A: Bifocals were invented by Benjamin Franklin in 1784. He combined a pair of his distance glasses and reading glasses by cutting the lenses in half and putting th... Read More »

Q: How to Shoot With Bifocal Glasses.
A: 1. Place the gun up close to your face and hold your head so that you can see the sights of the gun clearly through the bottom part of your bifocal lenses. The ... Read More »

Q: What are bifocals glasses?
A: Bifocal is a compound word, "bi" meaning two, and focal referring to the focal length. Bifocal glasses have two focal lengths. One focal length allows the weare... Read More »

Q: Who invented bifocal glasses?
A: Benjamin Franklin. Benjamin Franklin Read More »

Q: What are bifocals glasses?
A: Bifocal glasses - having lenses each with two parts with different focal lengths, one for Read More »