Central Tools 3B531 Electronic Digital Drum Brake Gauge 4-20 Inch Range

The Central Tools 3B531 Electronic Digital Drum Gauge is a precision measuring instrument designed for accurately measuring the inside diameter of brake drums, cylinders, and other cylindrical openings. This digital gauge combines ease of use with reliable accuracy for automotive brake service and general machining applications.

Key Features:

• 4" to 20" measuring range with oversize capability for versatile brake drum measurement
• Pointed anvils specifically designed for measuring in grooves and recessed areas
• Large, easy-to-read digital display for quick and accurate readings
• Extended arms allow measurement of bell mouth conditions and taper in brake drums
• Electronic digital readout eliminates parallax errors common with dial gauges

This drum gauge is ideal for brake service technicians who need to quickly determine if brake drums are within specification or require machining. The pointed anvil design ensures accurate contact points even in grooved or worn drums, while the long arms make it easy to detect taper and out-of-round conditions that can affect braking performance.