FAITIO Drum Brake Measuring Tool — Carbon Steel Brake Resetting Gauge, 6.5–14.25 in Dual-Scale for Accurate Shoe Clearance

FAITIO's drum brake measuring tool is a handheld gauge that quickly measures drum inner diameter and helps set brake shoe clearance for accurate drum brake installation and adjustment.

When replacing or servicing drum-style brakes, getting the drum diameter and shoe-to-drum clearance right is essential for proper fit and safe operation. The FAITIO brake resetting gauge removes guesswork by letting you measure the drum's inner surface, then transfer that dimension to the brake shoes so they can be adjusted to the correct distance. Built from carbon steel with both imperial and metric graduations, it covers common drum sizes used on older rear brakes and parking brakes.

How does this tool measure drum diameter?

The gauge uses opposing inside jaws that expand until they contact the drum's interior. Read the scale to get the drum's true inner diameter without trial-fitting the drum repeatedly.

• Expanding inside jaws contact the drum bore for direct reading
• Dual scales: 1/32-inch and 0.88mm increments for precise values
• Measures from 6-1/2 inches to 14-1/4 inches (160–360 mm)
• Simple thumb adjustment locks the jaws in place for transfer

How do you use the gauge to set brake shoe clearance?

After measuring the drum, transfer the tool to the shoes and use the outside jaws as a stop while adjusting the wheel cylinder or star wheel until shoes just contact the gauge. This gives a repeatable shoe-to-drum clearance for correct reassembly.

• Measure drum inner diameter with inside jaws
• Place tool beside shoes and expand outside jaws to touch them
• Adjust shoes until they lightly contact the outside jaws
• Confirm with the scale and lock adjustment before reinstalling drum

Which brake types and vehicles is this suitable for?

The FAITIO gauge is designed for drum-style systems found on many older cars, light trucks, trailers, and parking-brake assemblies. It also works when checking clearance on some handbrake and drum-in-hat applications.

• Compatible with rear drum brakes and parking brake shoes
• Fits drum diameters commonly used on older and classic vehicles
• Can assist with drum-in-hat checks and some handbrake setups
• Not intended for measuring disc rotor thickness

What is the construction and accuracy of the tool?

Made from durable carbon steel, the FAITIO measuring gauge is built for workshop use and resists routine wear. Clear metric and imperial marks let you read to the nearest 1/32 inch or about 0.88 mm, so adjustments are both fast and repeatable.

• Carbon steel body for strength and longevity
• Dual imperial/metric scales for flexibility
• Fine graduations for precise mechanical adjustments
• Simple mechanical locking for stable transfer measurements

Who is this for? If you service drum brakes, restore classic cars, or need to set parking brake shoes reliably, the FAITIO drum brake measuring tool streamlines one of the most fiddly parts of drum brake work. It’s aimed at DIY mechanics, independent shops, restorers, and fleet technicians who need a rugged, repeatable way to measure drum diameters and set shoe clearance without repeatedly fitting and removing drums.