kat,
I am the Mitutoyo Factory Sales Specialist for all Mitutoyo capital equipment in the Pacific Northwest USA, but started out years ago specializing in small tools… Regarding the battery cover, in many cases someone would break one or both ear tabs off the battery cover and throw it away. Without a cover the battery would probably get dislodged or come loose. This would be/is frustrating. Instead of purchasing new battery covers or making one in house they threw the calipers in the trash or gave them to a surplus type store. The calipers you have may be discontinued and the battery covers might be no longer available. I see you are in Europe, I would contact a large industrial supply house like MSC or Grainger or similar to your area that could possibly still have some older covers in stock. I would see if we still have them here at our USA Corporate Headquarters but getting them to you would be the challenge. I’m happy to help out in any way that I am capable of.
Let me know what you find out.
You made a great find.
LT