With Tapmatics ScribeWriter you can mark different types of materials from softer metals like aluminum to hardened steel up to 62 HRC. The marking force is completely adjustable by turning the knurled sleeve. There is no need to disassemble to change springs thanks to our unique adjustment feature that employs two types of springs. A heavy square wire spring is in effect for all force settings and an additional machined flexure spring comes into effect at the highest settings. The setting reference number can be easily read through a magnification lens. The long life carbide stylus is simple to change and we offer three standard options, 90 or 60 degree scribing points or 2mm diameter rolling ball point.