Central Tools 3B531 Digital Drum Gauge, Steel, Electronic 4" - 20" Wheel-On Drum Measurement
- The Central Tools 3B531 Digital Drum Gauge is a steel wheel-on electronic gauge that measures drum brake diameter from 4 to 20 inches (plus oversize). It features pointed anvils to reach grooves, depth stops for bell-mouth accuracy, and can switch between inch and metric units.
- Features:
- Large electronic display for clear reading of drum diameter and oversize beyond 20 inches.
- Pointed anvil tips allow measurement in grooves and explore uneven surfaces.
- Depth stops help ensure accurate measurement of bell-mouth and taper.
- Unit conversion (inch / metric) for flexible use.
- Specifications:
- Manufacturer: Central Tools
- Part Number / Model: 3B531
- Material: Steel
- Measurement Range: 4 to 20 inches (plus oversize)
- Anvils: Pointed tips for grooves
- Depth Stop Feature: For accurate bell-mouth/taper assessment
- Display: Electronic, with inch/metric conversion
- System/Application: Measuring brake drum diameter and internal drum defects in automotive brake service
- The Central Tools 3B531 may also be called wheel-on drum gauge, digital drum diameter gauge, bell-mouth measurement gauge, oversize drum checker, and Central/STORM 3B531 gauge.
The Central Tools 3B531 Steel Digital Drum Gauge provides precise, user-friendly measurements of brake drums, helping techs identify worn or bell-mouthed drums quickly in both shop and fleet service settings.
Q: What is the measuring range of the 3B531?
A: It measures from 4 to 20 inches, with ability to check oversize drums beyond 20 inches.
Q: Can the gauge reach grooves or bell-mouth surfaces?
A: Yes, it has pointed anvils for groove access and depth stops to ensure bell-mouth accuracy.
Q: Can it display both inch and metric units?
A: Yes, it converts between inch and millimeter units.
