Adams headband spectacles, English, 1796.
3 3 c m
actual image size: 32cm x 25cm

Adams headband spectacles, English, 1796.

© Science Museum / Science & Society Picture Library


Spectacles with silver turnpin temples (the rods designed to hold the spectacles on the wearer's head), and a leather case, made by I P. Spectacles have been in use in the West for at least 700 years. The earliest had convex lenses and they were worn by people with long sight, to help them focus on nearby objects. Later, concave spectacle lenses were made for people with short sight. In 1784 Benjamin Franklin (1706-1790) invented 'bifocals' - spectacles split into two parts, each with a different focal length.

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