Piedrujas street 11, ofiss 214, Riga, Latvia, LV-1073
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MAHR MarSurf M 300 C Mobile roughness measuring instrument

  • Bright illuminated color display
  • Automatic mode for standard device settings
  • Integrated thermal printer with high print quality
  • Simple to handle thanks to large color display and intuitive user guidance
  • Print the R-profile via the thermal graphics printer
  • Printed log either by pressing a button or automatically
  • Data transfer of results and profiles via USB interface to your PC
  • Evaluation of most common parameters as per ISO /JIS and characteristic curves, parameter lists (e.g. material ratio curve)
  • Printing of R-profile (ISO/ASME/JIS), P-profile (MOTIF), material ratio curve, measuring record
  • Measuring units (?m/?inch) and standards (ISO/JIS/ASME/MOTIF) are selectable
  • Integrated memory for the results of up to 40,000 measurements and 30 profiles
  • Tolerance monitoring
  • Setting of asymmetrical intersection lines for peak count calculation
  • Cylindrical drive unit with hand-held support and PHT-series probe
  • Individual sampling lengths and short cutoff can be selected
  • Lock for instrument settings
  • Date and time of measurement
  • Suitable for use with stationary measuring station
  • MarSurf PS1/M 300 Explorer software for recording measurements (optional)
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MarSurf M 300 Mobile roughness measuring instrument


Technical data

Measuring principle
Stylus method
Inductive skidded probe
Measuring units
μm/μinch selectable
Measuring range mm
Profile resolution
8 nm
Vertical Scale
Horizontal scale
Depends on cutoff
Log contents
R profile, MRK, P profile (MOTIF), results
Filter according to ISO/JIS
Gauß-Filter, Ls-Filter
Short stroke under ISO/JIS
Traversing length according ISO 12085 (MOTIF)
1 mm, 2 mm, 4 mm, 8 mm, 12 mm,16 mm
Evaluation lenth In according to ISO/JIS
1.25 mm, 4 mm, 12.5 mm
Number n of sampling length according to ISO/JIS
Selectable: 1-5
Contacting speeds
0.5 mm/s
2 µm
Measuring force (N)
LC display
High resolution color display, 3.5″, 320 x 240 pixel
Automatic/manual record with time
Thermal printer, 384 points/horizontal line, 20 characters/line
Printing speed
Approx. 6 lines/second corresponds to approx. 25 mm/s (1 in/s)
Ø 40.0 mm -1.0 mm, width 57.5 mm-0.5 mm, coated
Calibration function
Storage capacity
Internal memory for max. 40000 results, max. 30 profiles
Password protection
Lock for device settings
Power management
Drive unit, power sorce, USB, MarConnect
Relative humidity
30 % to 85 %
System of protection
M 300 = IP 42, RD 18 = IP 40
Operating temp. range
+5 °C to +40 °C
Temperature range for storage
-15 °C to +55 °C
Power supplied
NiMH battery, capacity: approx. 500 measurements (depends on number and length of record printouts)
Rechargeable batteries
NiMH battery, capacity: approx. 500 measurements
Wide range power supply
Plug-in power pack with three power adapters, for input voltages from 90 V to 264 V
Dimensions (L x W x H) for drive unit in mm.
139 x 26 mm
Dimensions (L x W x H) for measuring instrument in mm.
190 x 140 x 75 mm
Weight drive unit
Approx. 300 g
Weight measuring instrument
Approx. 1 kg