Dial 6690 Mechanical Angle Dial 1/2 Inches Drive

Product Description

The Dial 6690 Mechanical Angle Dial is a precision rotation angle measurement tool built for controlled fastener tightening applications. Tradespeople and mechanics use angle dials when torque-to-angle tightening is required — a method common in engine assembly, cylinder head bolt installation, and other critical fastening procedures where a specific degree of rotation must be applied after initial torque. This tool ensures accurate, repeatable results in demanding professional environments.

The 6690 features a full 360-degree range with 1-degree graduation markings, giving technicians fine control over rotation angle measurement. The dial face measures 95 millimeters in diameter, providing a clear and readable display even in tight engine bay conditions. The drive and output are both 1/2 inches square — hollow input and solid output — making it compatible with standard 1/2 inches drive ratchets, torque wrenches, and socket sets already common in professional toolkits.

A flexible magnetic holder is included for securing the tool to a fixed reference point during use. This keeps the dial stable and positioned correctly while rotation is applied, which is critical for getting accurate angle readings. Without a stable fixed point, angle readings can drift and lead to improper fastener tension.

Manufactured in Germany, the 6690 is built to the high tolerances expected in professional-grade mechanical tooling. HVAC technicians, automotive mechanics, and industrial maintenance professionals working with torque-angle fastening methods will find this tool reliable and straightforward to use. It requires no batteries or electronics — purely mechanical operation means no calibration drift and no downtime from dead batteries.

• Full 360-degree rotation range with 1-degree graduation for precise angle measurement
• Compatible with standard 1/2 inches drive tools — hollow square input and solid square output
• Flexible magnetic holder included for stable fixed-point attachment during fastening

Product Highlights

The Dial 6690 Mechanical Angle Dial delivers accurate torque-to-angle fastening control with a simple, fully mechanical design and standard 1/2 inches drive compatibility. It is a reliable choice for cylinder head bolt installation and other rotation-controlled tightening applications.

Product Information

Standard Information

• Brand: DIAL
• Manufacturer Part Number: 6690

Technical Specifications

• Drive Size: 1/2 inches (12.5 mm) square hollow input
• Output Size: 1/2 inches (12.5 mm) square solid output
• Rotation Range: 0 to 360 degrees
• Graduation: 1 degree
• Dial Diameter: 95 mm
• Net Weight: 0.29 kg (approximately 0.64 pounds)
• Magnetic Holder: Flexible magnetic holder included for fixed-point attachment
• Country of Manufacture: Germany