Accud
Accud Digital Protractor — 300mm
Part No: AC-821-012-01 | Barcode: 9346967027973 | Series: Accud 821 Digital Protractors
The Accud AC-821-012-01 is a 300mm digital protractor reading angles to 0.05° across a full 4×90° range (360° total). Stainless-steel blades, large LCD and hold/zero functions — the modern electronic alternative to the traditional bevel protractor for fast, unambiguous angle measurement.
300mm Blade
4 × 90° (360°)
0.05° Resolution
±0.3° Accuracy
Stainless Steel
Zero / Hold
Compatible Work
Fabrication Bevels
Mitre Setup
Mill Tramming
Machine Alignment
Trade Inspection
Key Features & Benefits
- 0.05° digital resolution — twenty times finer than a 1° mechanical protractor; reads directly without vernier interpretation.
- 4 × 90° range — measure any angle on the workpiece from a single contact face; no flipping the tool to reach beyond 180°.
- Stainless-steel blades — the 300mm blade is hardened and ground true for accurate contact; resists bench damage better than aluminium protractors.
- Large LCD with mm/inch-equivalent switch — readable under shop lighting; hold function freezes the reading for transfer or recording.
- Zero-at-any-position — set the display to zero against a reference face, then read deviation directly on the work.
- Locking knob — lock the blade pivot at the target angle for physical angle transfer to the workpiece.
When to Use the AC-821-012-01
Reach for the AC-821-012-01 digital protractor when you need fast, unambiguous angle reading — fabrication bevel setup, mitre-saw calibration, mill-head tramming, or precision machining layout. The 300mm blade reaches across larger workpieces and gives a more stable reference base. For traditional mechanical reading or battery-free use, the AC-812 bevel protractor is the workshop classic.
Pro Tip: On a mitre saw or bevel-cutting setup, calibrate the digital protractor against a known 90° or 45° reference first — a saw fence that’s slightly out carries into every cut and the protractor will inherit the error. Five seconds on a ground reference block before setup saves hours of re-cutting.
Product Specifications
| Part No. | Type | Range | Size | Graduation | Barcode |
|---|---|---|---|---|---|
| AC-812-005-01 | Mechanical Bevel | 0-180° | 120×150mm | 1° | 9346967026679 |
| AC-821-008-01 | Digital | 4 × 90° | 200mm | 0.05° | 9346967026686 |
| AC-821-012-01 ★ | Digital | 4 × 90° | 300mm | 0.05° | 9346967027973 |
★ You are viewing the highlighted variant. Other variants in this series are also available.
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