If you are an optician, do you refer to the difference between 2.25D and 2.37D as a twelfth?

Footprintz2014-12-08T13:58:39Z

Favorite Answer

I don't.

I would say it is a twelve stronger. It isn't a twelfth of anything.

12

Sulphur2015-05-28T17:23:31Z

Nope

10

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