Instrument for testing the quality of concrete and other construction materials according to UNI EN 12504-2 and ASTM C805. The recoil-force of the automatic hammer is displayed on the scale and indicates the strength of the concrete.
For analysing concretes with a minimum resistance of 10 N/mm2 to values as high as 110 N/mm2, which are now achievable with the ingredients and mixes available today.
The TQC Pencil Hardness Test according Wolff Wilborn provides in a simple method to test the scratch hardness of coatings. In this test, pencils in a range of 6B to 8H hardness-grade are used. The pencil is moved scratching over the surface under a 45° angle with a constant pressure. Then an optical assessment is carried out to see which pencil hardness damages the surface. Delivered with a set of 20 Koh-i-noor pencils and a pencil sharpener.