What’s Flat On One Side…

4-1/2” PLANO-CONVEX LENS

Item Number : 68741P1

$7.50 EACH

Temporarily out of stock. Please check back later.

What’s Flat On One Side…

and curved on the other? A turtle. Also half a grapefruit. Also a plano-convex glass lens, like this one (its focal length is twice the radius of its curved side). Mighty nice paperweight/magnifier too. Measures 4-1/2” across with flattened edges so it’s 3-1/4” across the other way.

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