High-precision protractor Stainless steel angle gauge Woodworking protractor Industrial dividing scale

This high-precision multi-functional protractor is a practical tool designed specifically for industrial design, woodworking, and precision measurement, featuring the following core characteristics:  

1. Material and Structure  
- Made of thickened stainless steel, it combines rust resistance, corrosion resistance, and high strength, offering durability far exceeding that of ordinary plastic protractors.  
- The thickened design ensures no deformation even with long-term use, making it suitable for harsh environments such as workshops and construction sites.

2. High-Precision Measurement  
- Graduations are accurate to ±0.5 degrees, meeting industrial-grade angle measurement requirements.  
- Dual main and reverse graduations support bidirectional readings from 0 to 180 degrees, minimizing parallax errors.

3. Multi-Functional Design  
- Multi-purpose measurement: measures internal and external angles, slopes, inclinations, and positioning, compatible with both flat and three-dimensional workpieces.  
- Expanded functionality: Some models integrate a ruler (millimeter/inch dual scales), spirit level, or vernier scale, enhancing overall practicality. 
- Suitable applications: Woodworking mortise and tenon angle positioning, mechanical processing indexing, building structure inspection, etc.

4. Humanized Details 
- Anti-slip rubber grip or hollow weight-reducing design (depending on the model) for more stable operation.  
- Some models are equipped with a magnetic base that can be directly attached to metal surfaces, freeing up your hands.  

5. Specifications and Parameters  
- Common sizes: 10cm and 15cm radius, thickness approximately 1.5-3mm.  
- Weight: approximately 200g (varies by size), balancing portability and stability.  

Application Areas 
- Professional scenarios such as custom woodworking furniture, metal processing, mechanical maintenance, construction supervision, and educational drafting.