Digital Drum / Rotor Micrometer Set - Coats fmr. Ammco-Coats / Hennesy

The Ammco-Coats 9K85452780 Digital Drum / Rotor Micrometer Set provides professional technicians with precise and repeatable measurements essential for brake service. This indispensable dual micrometer kit enables mechanics to confidently assess brake components, supporting informed "machine or replace" decisions for both drums and rotors, ultimately minimizing costly comebacks and upholding consistent service quality in demanding shop environments.

Key Features

• Dual Micrometer Design: Includes dedicated digital micrometers for accurate rotor thickness (0–2.4 in / 0–60.9 mm) and brake drum inside diameter (5–15 in / 127–382 mm), accommodating a broad range of passenger vehicles, light trucks, and various commercial applications.
• Digital Inch/Metric Readout: Features a clear digital display for quick and effortless toggling between inch and metric units, simplifying comparison with OEM specifications and established shop standards.
• Robust, Shop-Ready Construction: Engineered with durable steel housing and protected internal electronics to endure the rigors of daily use in high-volume automotive, fleet, and brake machine shop operations.
• Stable In-Drum Positioning: The large micrometer is specifically designed to stand securely within the brake drum, facilitating stable, hands-free measurements for enhanced precision and operational efficiency during critical checks.

Applications

This professional-grade micrometer set is a vital tool for automotive technicians, brake specialists, and fleet maintenance teams. The small micrometer is utilized to verify rotor thickness both before and after machining operations, ensuring compliance with manufacturing tolerances. The large micrometer is ideal for accurately checking drum diameters during routine inspections, comprehensive brake overhauls, and quality control checks performed on brake lathes. It supports precise internal diameter or thickness measurements critical for maintaining brake system integrity across passenger cars, SUVs, light- and medium-duty trucks, and various commercial vehicles.

Specifications

• Manufacturer: Ammco-Coats
• Model: 9K85452780
• Product Type: Digital Drum / Rotor Micrometer Set
• Measurement Units: Inch / metric (digital display)
• Ranges:
  • Small Micrometer: 0–2.4 in (0–60.9 mm)
  • Large Micrometer: 5–15 in (127–382 mm)