Ruler for your Keychain

I don’t know about you, but soon after I started 3D printing, I started to see so many opportunities to solve problems by designing and printing something. I would often be somewhere and need to take a measurement of a small area but not have any measurement tools with me. I would use my fingers to get a concept and then measure my fingers later — this works but is not that accurate 🤣 This happened again yesterday and so I decided I don’t want to be without a ruler close by. So I designed this small ruler to have with me on my keychain! The ruler can measure up to 6cm and is accurate. This is less that 3g of filament — so it’s a great way to use up the end of a filament role! This would also be great for use in a school for students! Never be caught without your ruler again!