Joseph Banks Develop tank marble razor blade sharpener tin Mentality vein
This is a steel wire frame with two glass marbles. It was found in an old garage among various stuff. The marbles can turn inside the frame. : r/whatisthisthing
Metal spring thing with 2 red glass balls. Can be separated, the balls do come out. Little over 3 inches. Looks like a pair of tongs holding the red balls : r/whatisthisthing
Amazon.com: AnySharp Editions - World's Best Knife Sharpener - For Knives and Serrated Blades (Marble): Home & Kitchen
Marble Razor Blade sharpener - ALL ABOUT MARBLES
Found at my grandmother's. We think it's used for sharpening knives or razors. Any ideas? : r/whatisthisthing