Practical, inexpensive method to quickly determine approx. hardness of heat treated work pieces and materials.
Indispensable for every machinist and heat treater.
Handy, color coded set of 6 testing files covers nominal hardness from 40 RC to 65 RC in increments of 5 RC.
Special curved design for easy access in hard to reach places.
WARNING: This Product Can Expose You To Materials And/Or Chemicals Which Are Known To The State Of California To Cause Cancer And/Or Reproductive Harm.
