Straightedge - Flatness Measuring Tool

Ladies and Gentlemen…I am proud to present you a 3D printed Straightedge.We all know it !!!Everyone wants to check the flatness of something at some point. Print-Beds, PEI-Plates, Aluminum-Extrusions etc.But that's exactly when you usually don't have the right tools at hand.However, Straightedges can also be very expensive to purchase if you haven't bought one yet. This is the solution !!! It is not possible to slide a 0.02mm Feeler-Gauge underneath it.0.02mm is a fifth of the thickness of a normal piece of paper. A fifth !!! Even a human hair is usually twice as thick as 0.02mm.So it's very precise !!! You can see it very well in the pictures below: Here is an example of a measurement on a textured PEI plate: Here is another example of a measurement on a Glass-Bed: Please convince yourselves by printing one for you, your workshop or friends. The Straightedge comes in 6 different sizes. The most common lengths are: 100mm, 120mm, 150mm, 180mm, 200mm, 250mm Note:I highly recommend printi