DUR-O-Test

Hard­ness Meter

This pocket instru­ment allows hard­ness tests on flat and curved sur­faces. The instru­ment con­sists of a sleeve with a pres­sure spring that can be bent to vari­ous ten­sions by using a slide. The spring acts on a tung­sten car­bide nee­dle with its tip extend­ing out of the sleeve. A lock­ing screw fixes the slide, thus main­tain­ing con­s­tant spring ten­sion.

Three pres­sure springs of vary­ing strengths rang­ing from 0-20 N (0-2000g) are avai­l­able to cover a large hard­ness range.

Comes com­plete with:
Hard­ness tester DUR-O-Test
3 pres­sure springs in a leather case

Springs
No. 1 sil­ver 0 - 3 N (0 - 300 g) divi­sion: 10 g
No. 2 red 0 - 10 N (0 - 1000 g) divi­sion: 50 g
No. 3 blue 0 - 20 N (0 - 2000 g) divi­sion: 100 g