Ammco 8500H - Micrometer Brake Drum f/ Heavy Duty Trucks

Brake Drum Micrometer
For Heavy-Duty Truck Drums is Graduated by 0.005" and has a Range of 6" to 26". For precision measuring of drum diameters, The 8500H Measures Drum Diameters on or Off the Lathe, and May be Used to Check Out-of-Roundness. Easy-to-Read Dials are Shockproof and graduated. This Model May Be Used with No. 9582 Checking Gauge.