Sew Red Clip-On Glasses: Color Value Finder/Gray Scale Contrast Evaluator. Perfect for Quilters, Artists, Florists & More!

These glasses are useful for distinguishing the colors of wires when you do electrical work.

Work great when doing measurements with a red laser system. Easily pick out the laser dot on a white target in bright light. The flip-up aspect works well with my prescription glasses. Not having to put on extra red sunglasses over my regular ones. Just flip down when needed and flip-up when not.

These would have gotten 5 stars had they not fallen apart after about a month or two. I was not able to put them back together again, so they sadly went in the trash.

I guess I did not understand how these would work. A green of any value looks black. All reds look "white." Not all that helpful.

Arrived broken. Will try another pair - just hate having to wait another week!

I'm an artist, and since value trumps color, I use it to make sure my relative values are where I need them to be (according to my source material)... Then I adjust the hue.

They are a little flimsy for the price

Works well for me because I need to wear my glasses to see