About this 3D model

---UPDATED: Now includes a broader range of holes -- These are gauges that help you find the perfect hole clearance when you design objects. The holes step up in 0.2mm increments; for example, the 3mm gauge goes from 3.0, 3.2, 3.4, 3.6, 3.8. You can also test if different colors or types of filament produce the same result.