The MarSurf M 300 (6910401) is an advanced and easy to use surface roughness gage/profilometer that is built on the M series platform. The unit boasts a Bluetooth interface between the evaluation unit and the drive unit.  This makes positioning of the unit for assorted measuring applications very easy!  A large, illuminated color display to read the parameters and the profiles allow viewing your measuring results in a poorly lit environment.

The MarSurf M 300 offers an integrated memory for up to 40,000 results or 30 profiles, tolerance monitoring, vertical scale selection, and the setting of unsymmetric intersecting lines for peak count calculation.



  • Measuring range of up to 350 μm (.014 in)
  • Units μm/μinch selectable
  • Standards: ISO/ASME/JIS and MOTIF selectable
  • Travsersing length as per DIN EN ISO 4288/ ASME B46.1:
    1.75 mm, 5.6 mm, 17.5 mm (0.07 in, 0.22 in, 0.7 in)
    as per EN ISO 12085: 1 mm, 2 mm, 4 mm, 8 mm, 12 mm, 16 mm
  • Number of sampling lengths selectable from 1 to 5
  • Automatic selection of filter and traversing length conforming to standards
  • Phase-correct profile filter as per DIN EN ISO 11562
  • Cutoff 0,25 mm 0,80 mm 2,50 mm
    (0.010 in 0.032 in 0.100 in)
  • Short cutoff selectable
  • Parameters as per:
    DIN/ISO: Ra, Rq, Rz, Rmax, Rp, Rpk, Rk, Rvk, Rv,
    Mr1, Mr2, A1, A2, Vo, Rt, R3z, RPc, Rmr, RSm, Rsk
    JIS: Ra, Rz, RzJIS, Sm, S, tp
    ASME: Rp, Rpm
    MOTIF: R, Ar, Rx, W, CR, CL, CF
  • Tolerance monitoring in display and measuring record
  • Automatic or adjustable scaling
  • Printing of R-profile (ISO/ASME/JIS), P-profile (MOTIF), material ratio curve,
    measuring record
  • Output of date and/or time of the measurements
  • Integrated memory for the results of up to 40,000 measurements and 30 profiles
  • Dynamic calibration function
  • Locking and/or password protection for instrument settings
  • On Shafts, large machines
  • Automotive engineering
  • On big workpieces
  • On milling and turning parts
  • On grinding and honing parts
  • In the production area to check the roughness of your workpiece!

Scope of delivery
The MarSurf M300 is delivered as a set in a handy carrying case - consisting of:

  • Evaluation unit MarSurf M 300
  • Drive unit MarSurf RD 18
  • Standard probe PHT 6-350
  • Integrated roughness standard (in MarSurf RD)
  • Mahr calibration certificate
  • 1 chart paper roll
  • Height adjustment
  • End face vee-block
  • Probe protection
  • Tracer protection slip-on vee
  • 2 x USB cable (connectable on PC or drive unit)
  • Allen key
  • Power pack with 3 mains plugs
  • Operating instructions

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6910401 MarSurf M300 Mahr Portable Surface Roughness Tester with 2 micron stylus

  • Brand: Mahr
  • Product Code: 6910401
  • Condition: New
  • Warranty: 1 Year Manufacturer’s Warranty
  • Availability: SHIPS FACTORY DIRECT

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