Ruler
Ruler is a lightweight, client-side selection and measurement tool for Minecraft 1.21.1 (Fabric). It lets you mark two positions in the world and instantly see a clean holographic 3D visualization of the selected area — along with all relevant measurements in a HUD overlay.
Inspired by WorldEdit CUI, but completely standalone. No server plugin or WorldEdit installation required.
How it works
Press R to activate the ruler (rebindable under Controls → Ruler).
- Left-click a block to set Pos1
- Right-click a block to set Pos2
That's it. The selection renders immediately.
Press R again to deactivate and clear the selection.
3D Visualization
The selection is rendered as a holographic wireframe box directly in the world:
- XYZ color-coded edges — X red, Y green, Z blue
- Subtle inner grid for spatial orientation
- Transparent block highlights at Pos1 (green) and Pos2 (red)
- Single positions are shown before the second is placed
- Clean, modern look — no chunky vanilla-style boxes
HUD Overlay
A small panel in the top-left corner shows:
| Field | Description |
|---|---|
| Pos1 / Pos2 | Block coordinates |
| Distance | Direct 3D diagonal (air-line) |
| X / Y / Z | Dimensions of the selection |
| Area | Footprint (X × Z) |
| Volume | Total blocks (X × Y × Z) |
Languages
Ruler ships with 37 languages out of the box:
Standard: English, Deutsch, Français, Español, Italiano, Português, Русский, Українська, Polski, Nederlands, Svenska, Dansk, Norsk, Suomi, Čeština, Slovenčina, Magyar, Română, Türkçe, Ελληνικά, 简体中文, 繁體中文, 日本語, 한국어, العربية, עברית, Tiếng Việt, ภาษาไทย
Compatibility
- ✅ Client-side only — works on any server, no server mod needed
- ✅ ModMenu — appears correctly in the mod list
- ✅ Fabric API required
Requirements
- Minecraft 1.21.1
- Fabric Loader ≥ 0.17.3
- Fabric API
