How can I test sunglasses at the thrift store for polarization?

Post date: 2021-06-13 04:47:54
Views: 89
I buy my sunglasses at the thrift store and I would prefer polarized ones. I often try to look up the model # but not all sunglasses have the model # on them. I found guides online to look at shiny objects or a computer screen to determine polarization but it didn't help. I have some scrap pieces of polarized car window tint, could that help me? Is there a reliable way I can prepare to go in and determine which sunglasses are polarized? Thanks
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