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LoginPrecision Brake
Tools & Gauges
The original Fraser Gauge drum brake measurement tools — trusted by transit authorities, fleet maintenance shops, and DOT inspectors for over 50 years.
Our Tool & Gauge Line
Every Fraser Gauge tool is precision-machined in Detroit from hardened steel. Designed specifically for commercial vehicle brake systems — not adapted from automotive tools.
FG-202D
The flagship Fraser Gauge drum brake measurement tool. Precision C-frame design with a dial indicator for measuring brake drum diameter and out-of-round conditions. The industry standard for transit fleet brake inspections.
Specifications
- Range: 14" – 16.5" drums
- Accuracy: ±0.001"
- Dial indicator included
- Steel C-frame construction
Applications
- Transit buses
- Class 6–8 trucks
- School buses
- Motor coaches
FG-202C
Compact version of the 202D for smaller drum sizes. Ideal for front axle and tag axle brake drums. Same precision dial indicator and steel frame construction as the 202D.
Specifications
- Range: 12" – 14.5" drums
- Accuracy: ±0.001"
- Dial indicator included
- Compact steel C-frame
Applications
- Front axle drums
- Tag axle drums
- Light-duty commercial
- Paratransit vehicles
FG-APG
Precision go/no-go gauge for measuring anchor pin bore wear on S-cam brake spiders. Quickly identifies worn bores that require replacement, preventing brake drag and uneven lining wear.
Specifications
- Go/No-Go design
- Hardened steel construction
- Covers standard pin sizes
- FMCSA inspection compliant
Applications
- S-cam brake spiders
- Anchor pin bores
- Annual brake inspections
- DOT compliance checks
FG-SPG
Measures spider and caliper bracket mounting face wear and alignment. Essential for disc brake caliper installations to ensure proper carrier alignment and prevent uneven pad wear.
Specifications
- Precision ground faces
- Hardened steel
- Disc brake compatible
- Caliper bracket alignment
Applications
- Disc brake calipers
- Caliper bracket mounting
- Meritor EX225
- Bendix ADB22X
Why Fraser Gauge Tools?
Original Design
The 202D and 202C drum gauges were designed by Fraser Gauge engineers specifically for transit bus and heavy truck drum brake inspection — not adapted from automotive tools.
Precision Machined
Every gauge is precision-machined from hardened steel in our Grosse Pointe, Michigan facility. Accuracy is maintained to ±0.001" for reliable, repeatable measurements.
DOT & FMCSA Ready
Our gauges meet the measurement requirements for FMCSA brake inspections and are trusted by transit authority maintenance departments across North America.
Also from Fraser Gauge
Complete your brake system with our remanufactured disc brake calipers.
Ready to Order?
Contact our team for pricing, volume discounts, and fleet account options. Same-day shipping available on in-stock gauges.