Cheapest metric micrometer on Amazon - Review & micrometer lapping

These metric 25mm - 50mm micrometers are sold on Amazon and eBay. I bought one to see if it would be accurate for my purposes. I ended up having to lap it and then discovered that it had other issues. Tom Lipton's micrometer lapping video -    • Space Micrometer Anvil Lapping   Here are some links to the micrometer,tools I used to lap it, and others that I recommend. Micrometer (I do not recommend but if you want to see the ad, the same pictures are used on eBay) - https://amzn.to/2UI4YUp Norton sharpening stone - https://amzn.to/39u3JNY Japanese wet stone - https://amzn.to/3dDjBkE Zoom Spout Machine oil - https://amzn.to/2wBJq45 Good cheap digital calipers - https://amzn.to/2IDBNg7 The previous links are affiliate links, as an Amazon Associate I earn from qualifying purchases.