That is a really good point about Vernier calipers for seldom used tools. You can keep them in the box until needed and then count on their functioning exactly as they did when you put them away. No bad batteries. No broken dials.No mention here of vernier calipers but this is a decent option. For larger calipers that get used infrequently I’ve bought used vernier calipers off ebay. They’re pretty much guaranteed to be trouble free forever. Tumico calipers are pretty decent and not targets for collectors.
All you really need is a magnifying glass to help read them. I picked that one up from a college professor who was almost as old then as I am now. He always had a high quality magnifier in his pocket. I carried one ever since and now have three in my pocket. "Hastings triplet" is the word.