M 310 Mobile Surface Measurement System

Sept. 23, 2021
Mahr Inc.'s mobile surface measurement system is now available with MarWin Easy Roughness Software Integration.

Update: 9/23/21

The MarSurf M 310 mobile surface measurement system is now available with an integrated connection to MarWin Easy Roughness Mobile software. This functionality allows the M 310 to be used as a drive unit for the MarWin Easy Roughness Mobile software, enabling another way to interface and control the M 310 while providing the complete functionality of the touchscreen unit on a PC. Direct connection to the PC is available via USB cable or Bluetooth adapter, replacing interface boxes that previously would have been required, and cutting implementation costs by half.


The MarWin Roughness Viewer is a simple no-cost software program for viewing the measured profiles. Evaluation (filtering and calculation of characteristic values) is still performed in the MarSurf M 310. The viewer enables the creation of reports from as many as 100 profile files, easy configuration of the reports, the ability to save reports as PDF files, and to edit profile information for reporting.


With the software integration, users can fully operate the M 310, change filter settings, calculate additional parameters, etc., as opposed to just viewing the stored measurements.

MarSurf M 310 mobile surface measurement system brings ease-of-use to new levels with a large, illuminated, rotatable 4.3-in. high-resolution touch screen built right into the unit. It was designed to provide high-precision measurements to test surface roughness on small and large workpieces.


The portable unit brings features that were previously only available in PC-based systems to the mobile world. Features including automatic creation of measuring reports in PDF format, integration of a barcode or data matrix scanner, and printing reports to letter-size paper are now all standard. An optional portable printer is also available. 


The MarSurf M 310 also provides error-free operation through standard-compliant settings.


Automatic cutoff selection ensures the correct measurement results — even for inexperienced technicians. Additionally, a highly efficient battery allows for more than 1,200 measurements on a single charge. Integrated memory enables more than 500,000 measurement results to be stored, 1,500 PDF protocols and an optional Micro SD card slot allows additional memory to be added to increase that up to 320 times — or 160 million results.  


Weighing in at just a pound, the unit's display adjusts to allow users to measure in all positions – horizontally, vertically or upside down. In addition, the unit can be mounted on a measuring stand to provide a stationary roughness measuring instrument for small workshops. The range of measuring applications is expanded by the ability to remove the drive unit from the MarSurf M 310 and operate it separately from the display, providing the user with more flexibility. The drive also incorporates built-in "Vees" to support small diameter parts during the measurement cycle.


MarSurf M 310 software features 31 parameters to choose from, offering a performance range on par with a laboratory instrument. Tolerance limits can be set for all selected parameters, and exceedances are signaled in the display and in the protocol. Measurements are made according to the standards and rules for stylus instruments (DIN ISO, ASME, JIS, MOTIF), and can be quickly and easily saved in the device. Free MarWin Roughness Viewer software for Windows is also available, which allows the measurements to be brought over to a PC for archival or use in quality documentation reports.

Positioning Speed0.5; 1.0Measuring PrincipleStylus methodProbeInductive skidded probeParametersA1, A2, Ar, CF, CL, CR , Mr1, Mr2, R, R3z, RPc, RS, RSk, RSm, Ra, Rk, Rmax, Rmr (tp (JIS, ASME) is equivalent to Rmr), Rp, RpA (ASME), Rpk, Rpm, Rpm (ASME), Rq, Rt, Rvk, Rx, Rz, Rz (JIS), Rz (Ry (JIS) is equivalent to Rz), VoMeasuring Unitsmetric/inchesMeasuring Range0 to 13.7 in. (0 to 350 mm)Profile Resolution8 nmFilter According to ISO/JISGaussian filter as per ISO 16610-21 (formerly ISO 11562), special filter as per DIN EN ISO 13565-1, Lambda s filter as per DIN EN ISO 3274 (can be switched off)Number n of Sampling Length According to ISO/JISSelectable: 1 to 16Stylus5 µmMeasuring Force (N).00075Calibration Functiondynamic; Ra, Rz, RsmStorage Capacitymin. 3,900 profiles, min. 500,000 results, min. 1500 PDF measuring records, expandable to 32 GB with microSD card (320x memory capacity)Data interfaceUSB A , USB B , MarConnect (bidirectional) , Micro SD slot for SD / SDHC cards up to 32 GBSystem of protectionIP 40Rechargeable batteriesLithium-ion battery, 3.7V, nominal capacity 11.6 Wh, min. 1,200 measurementsWide range power supply100 to 264V



  • Simple and intuitive to use: as easy as using a smartphone
  • Large, illuminated 4.3-in. TFT touch display
  • Specification of the cutting line C in ?m or in % of Rz for the characteristic values Rmr and tp
  • Removable drive unit
  • 31 thread parameters
  • Work without errors, thanks to integrated, removable roughness standard
  • Automatic cutoff selection, so even non-specialists can be sure of getting the correct measuring results