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$ 39.00
is back-ordered. We will ship it separately in 10 to 15 days.
The Lens Stress Tester is used to determine the condition of a lens so you can quickly decide if it needs to be replaced. If the lens is damaged by thermal stress, the shape of a cross appears in the lens when the polarized film is rotated.
$ 19.00
$ 10.00
$ 5.00
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