Fowler Hardness Tester File SetFowler's Hardness Tester File Set is an inexpensive, easy to use method for determining material hardness by sliding the file across the object's surface. Six color coded files indicate hardness from 40 to 65 HRC. Conveniently packaged in a leather like case with a Velcro lined flap, the files are approximately . 157" in diameter and 7" in length (4. 3 x 175mm). Testing Procedure: Run the Black file (65 HRC) over test material. If it marks the

• Tolerance mode indication

• Knurled grip

• Long-lasting

120” contact points

• Absolute/Incremental measurement

• Spindles are available in 4"

• 2 Deburring Blades

• Sleeve reads 0

53-900-185-4Magnification 50x

• Hardened to 50-55 HRC

• Coolant

• Large flat anvil 150mm ø