Vernier Scale, Skew Calibration Pattern

This is a single layer vernier pattern printed on the build plate to calibrate X-scale, Y-scale, and Skew. The intent of the model was to make a calibration print that was large, could be printed very quickly (usually about 5 minutes or less), and used negligible material (only a few cm.)

The print uses a vernier pattern which is measured directly on the build plate instead of printing an object and measuring with calipers. The accuracy of the measurement is +/-0.005" (about +/- 0.1mm) over a span of 8" (about 203mm), so the overall accuracy is about +/-0.06%. That should translate to about +/-0.01mm over a 20mm object. Although some may not be satisfied with that accuracy, it's good enough for me considering how quick and easy it is to make (and verify) adjustments.

If you're not familiar with using a vernier pattern, I recommend looking it up. It's a remarkably simple way to make extremely accurate measurements "by eye" (although the tradeoff is that it requires a patter