You’re not gonna get anywhere in this hobby without some.
There was a time not long ago that you paid well over $200 for a good set of precision calipers. Now you can get them for as little as $20 on sale. Get DIGITAL Calipers. You’ll be glad you did.
After you’ve used the digital calipers for a while you may like to try a DIAL Caliper, They have their own niceties you’ll also come to appreciate. And lastly, VERNIER Calipers, just skip them, unless you are really used to using them they are difficult for most people to use accurately.