You know, these could be ripe for a comeback, now that masks have become the height of fashion.Lady Fraktor wrote: ↑Thu Jan 13, 2022 5:04 am I occasionally listen to old radio shows so had a laugh when I found this advertisement.
I found another picture of this product that immediately makes it clear how it works. It's like metallic tinted sunglasses. Now... maybe they could made one suitable for use in welding?" https://i.pinimg.com/originals/28/34/37 ... 220ca2.jpg
Or... for viewing eclipses?