15. 5. 2017 Determining hardness Compared with the strength tests, determining hardness is relatively quick and easy. The so-called ‘durometer’ measures the diameter of an imprint in a cast-iron section from a brake drum. Additional info File type: JPGFile size: 163 KBDimensions: 1482 × 1254 pxPublished: 15. 5. 2017 Tags 2017 Innovations