Mahr Metrology India Pvt. Ltd. Manufactures Portable Roughness Measurement Device. Mahr Metrology India Pvt. Ltd. Is an ISO9001:2008 and ISO 17025:2005 certified company that also manufactures products like Testing And Measuring Instruments, Stands, Sensors & Indicators, Micrometers, Pumps, Metering & Dosing Pumps, Ball Bearings, Measuring Instruments, Motor Controllers, Calipers Portable Roughness Measurement Device is a pocket sized and very compact instrument that measures the quality ofÿproducts` surface finishes. The Portable Roughness Measurement Device gives an Error-free operation thanks to an integrated roughness standard. The Portable Roughness Measurement Device is used in On-site surface roughness measurement, Measurement in the production process, Universal use on processing machinery and for incoming goods inspection.