3-Point External Diameter Caliper 5-40mm x 0.05mm

The 3-Point External Diameter Caliper is a precision measuring tool designed for accurate measurement of external diameters from 5 to 40mm, with a fine resolution of 0.05mm. Its three self-centering contact points provide reliable major diameter readings, making it ideal for measuring tools with three-sided symmetry such as router bits, drills, reamers, and milling cutters. Constructed from durable stainless steel, it features a matt chrome-plated scale with both metric and imperial graduations for easy reading. The included locking screw ensures your measurements stay fixed for precise repeatability. Perfect for woodworking, metalworking, and general precision measurement tasks.

Key Features:

• Range: 5–40mm (0.2–1.57")
• Resolution: 0.05mm (0.002")
• Three-Point Contact: Self-centering design for precise MR diameter of 3-flute tools.
• Stainless Steel Jaws: Wear-resistant for long-term reliability.
• Vernier Scale: No battery dependency – ideal for workshop environments.
• Locking Screw: Secures measurements without slippage.

Typical Applications:

• Woodworking: Measuring router bits and other cutting tools with three-sided symmetry. 
  
• Metalworking: Measuring cylindrical objects or tools with multiple cutting edges. 
  
• General Precision Measurement: Can be used for any situation requiring precise measurement of round objects with three-point contact.