Magnetic Calliper Case

Just a simple case for analog callipers, that closes with four magnets. It holds together really strongly and won't come apart, even if thrown into a backpack or something like that. The magnets have a tight fit on my printer, so they don't need glue, just a bit of force to get them into place. I just stuck them to a metal ruler and used that to press them in. This helps to keep them straight and apply enough force to seat them completely.