On 19/01/2021 22:59, Roger Mills wrote:

One is for adjustable spectacles, where you twiddle a knob each side to
adjust the diopter rating of the lenses. Each lens is in two sections,
which move relative to each other. I can't work out whether they slide
from side to side or simply move apart axially. The prices in the
Twitter adverts are ridiculous - special half price offer for *only* £59
- whereas Amazon and Ebay have very similar offerings for a fraction of
that price.




And have you read the amazon reviews?


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