- Simple and economical
- Optimal for hard (metal) or soft (plastic and rubber)
- Digital and dial hardness testers available
Hardness testers measure the hardness of a material. Typically, a hardness tester measures the effect on a material’s surface after it has been penetrated locally by a diamond, carbide, or hard steel indenter under a known load.
Fowler (Fred V. Fowler Co.)
SPI (Swiss Precision Instruments)