Can anyone recognize a diamond with a micron "u" inside? I bought a bunch of stuff from Goodwill. A vernier depth gauge came in a box with this brand. looks like an estate sale. It looks like everything has an Enco sticker on it, so he bought a lot from them. I did too but none of my stuff has this brand. Here is a link to a current auction, plainly showing the brand and Enco part number. Was this their own brand and do you know the likely manufacturer of this? Thanks. Charles
https://shopgoodwill.com/item/204173042
https://shopgoodwill.com/item/204173042