Z Calibration Gauge 80×100×100 (EF-Safe) freeSTL

How to check Z 🧱 Set it upright on a flat table with the square base down and the tall plate vertical (same as printed). 📏 Slip your caliper tips into the rear slot. 🔁 Touch one tip to the front flat, the other to the back flat. ✅ Read it — that’s your true Z height (target 100.00 mm). Why better than a cube 🦶 Elephant-foot immune – raised reference faces. 🎯 Clean 100 mm span – tiny errors are obvious. 🔒 Guided & repeatable – the slot aligns the calipers. If this tool helps, you can suppo…

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