Techno instruments co offers versatile, elegant, digital, light and portable hardness testers for normal or confined spaces and thin components with german precision the instrument directly gives hardness in rockwell, hrc, hrb, vickers hv, brinell hb, for steel and cast steel.T he readings can be taken in any angle with an accuracy of + 0.5%. The instrument is available with rs232 pc interface, optional software/printer.