The ultimate compact material thickness test that prints in nozzle-friendly 0.2mm increments ranging from 0.2mm to 2.4mm. You can use it to check the wall thickness on your designs to make sure it has the strength, transparency or flexibility you need. 

The tool is super-compact, measuring just 40x58mm!

I've added a second print profile with long tabs/tongues that are 40mm instead of 15mm used in the standard design. This gives you and idea of how these longer sections behave under stress.