The Elcometer 7062 surface roughness tester is a light weight and portable measuring solution for the range of surface roughness measurements required for compliance to International Standards. In protective coating applications there is a requirement to measure surface roughness. With 31 surface parameter settings available the Elcometer 7062 surface roughness tester can display all parameters that comply to National & International Standards. These values include peak-to-valley profile measurement in combination with an assessment of the frequency of peaks within the sample area. The Elcometer 7062 surface roughess tester is a light weight and portable measuring solution for the range of surface roughness measurements required for compliance to International Standards. The unit is also suitable for assessing surface roughness conditions in a wide range of general industrial applications; particularly where the sample is too large to bring to the laboratory. Multi-Lingual Display: All the required information is displayed on screen in a choice of 17 languages. Flexible: Can be used in virtually any position; horizontally, vertically, upside down. A height adjustment accessory to accommodate various sample sizes is supplied with each gauge as standard. Integrated Calibration Standard: No external calibration standard is required; provides greater ease of use. Removable Drive Unit: Drive unit can be removed from main unit and used with an extension cable (included) to allow for measurement in hard to reach areas. Stylus pick-up with removable protection: 2µm (80µin) diamond stylus tip with a measuring force of 0.7 mN. Different stylus’ are available for various applications. How to use a surface roughness tester Surface roughness testers consist of a stylus which is mechanically drawn across the surface recording an 'image' of the surface roughness across a pre-defined sample length. The measurement technique provides a number of measurement parameters including: Rmax: The greatest distance between the highest peak and lowest valley over the sampling length. Ra: The average surface roughness over the sampling length. Rt: The distance between the highest peak and the lowest valley within any given sampling length. Rz: The average distance between the highest peak and the lowest valley over a number of sampling lengths.