SM Metrology Systems

SM s.r.l. is one of the leading companies in Italy in the production of electronic measuring instruments for the industry, focused on innovation and future.Specialised in the design and production of highly technological instruments, it manufactures inside its plant, a wide range of instruments for the characterisation of surfaces, dimensional errors and for quality assurance: roughness testers, roundness testers, profilometers, data acquisition and elaboration devices.

Roughness Tester



  • RT 10 Roughness Tester: Basic model in the range, ideal for measuring pieces directly on workstations or production machinery.
  • Simplicity: Easy to use for numeric characterisation of object roughness with quick testing times.
  • Features: Internal memory, simple handling and integrated battery for measurements in challenging conditions.
  • RT 10 Plus (code 1,101): Enhanced version with a plug-in connector enabling pick-up interchangeability.
  • Versatility: Allows measurements on various surfaces by mounting the most suitable pick-up.


  • LITEsurf Roughness Tester: Simplified design born from 40 years of experience.
  • Ideal for direct measurements on work islands or in production.
  • Connectivity: Bluetooth and USB for easy linking to devices.
  • App Integration: “Roughness Studio basic” app for global information sharing.
  • Versatile: Measures horizontally, vertically and above/below.
  • Probe Flexibility: 90º rotatable probe for comprehensive piece measurement.
  • Durability: Light alloy body with PC/ABS shell for rigidity and impact resistance.
  • Autonomy: 10 hours of work and 300 measurements in 50 minutes with refill management system.


  • WARPsurf: Revolutionary in surface analysis instruments, combining roughness and profilometry in a single portable device.
  • Features: 7” touchscreen display with a modern user interface for easy operation and parameter settings.
  • Processing Power: Equipped with a 1GHz microprocessor for smooth and fast processing, even with complex profiles.
  • Compact Design: Extremely compact and handy, with an integrated micrometric covering a 110mm range for easy positioning on large pieces.
  • Connectivity: Standard USB interface for saving images or PDF reports, connecting to a desktop printer, and direct A4 printing.
  • Versatility: Interchangeable styluses enable analysis of both surface features and dimensions, accommodating both roughness and profilometry.

Laboratory Profilometer-roughness tester (RT120)

  • RT120: Designed to characterise roughness and micro-profiles on complex pieces using the “all-in-one” logic and Profile Studio analysis software.
  • Profile Studio Software: User-friendly interface divided into categorised functions with different colours for easy operation.
  • Combined Analysis: Enables input and display of new dimensions and roughness analyses on the same screen for comprehensive piece analysis in a single measurement.
  • Self-Comparing Function: Reconstructs reference profile dimensions on a new profile, saving time during series checks.
  • Standard Parameters: Calculates 70 parameters based on recent standards like ISO 4287, ISO 1356-1 and -2, ISO 12085, VDA 2007 for precise roughness assessment





  • PGS100 Profilometer: Enables intuitive acquisition of 2D profiles with a measuring range of 130mm (X) length and 50mm (Z) height.
  • User Interface: Tool operated via software commands or PC keyboard for a straightforward experience.
  • Profile Studio Analysis: Equipped with CAD functions for dimensioning pieces and creating automation programs for series measurements.
  • Customisable Configuration: Standard setup includes a worktable with a “T” slot and a 32mm chisel measuring probe, expandable with various accessories like a positioner with 3 or 4 degrees of freedom and a precision vice for secure piece clamping during measurements.
  • Guided Calibration: Calibration facilitated by dedicated calibration sample, guided by the software for accuracy.

All in one profilometer (PGS200)

  • PGS200 Profilometer: Next-generation instrument capable of characterising complex profiles with ease and efficiency.
  • “All-in-One” Logic: Modern design allows quick calibration and readiness for measurements with minimal operations.
  • User-Friendly Software: Profile Studio software is intuitive and operator-friendly, categorising profile characterisation functions into easily identifiable coloured groups (points, line, arc, sizes).
  • Advanced CAD: Dynamic items in CAD allow post-input editing for flexibility.
  • Measurement Cycles: Enables measurement execution for complex pieces, automatically overcoming obstacles like grooves or shouldered parts and reconstructing the profile afterward.
  • Motorised Column: Automatic calibration and measurement cycles save time and enhance flexibility during operations.

Roundness Tester


Laboratory Roundness Tester (R250)

  • R250 Roundness Tester: Designed for precise characterisation of circular and complex geometries, catering to various industries like mechanical, motor, aerospace and machine manufacturing.
  • Structure: Solid build with a diabase base and pneumostatically supported plate for accurate measurement of heavy pieces.
  • Circom Software: User-friendly software for easy operation, reducing training time and costs.
  • Geometric Tolerance Analysis: Capable of analysing parameters such as roundness, linearity, cylindricity, conicity, concentricity, parallelism, coaxiality run out, total run out, and thickness variation.
  • Surface Analysis: Circom software automatically eliminates gaps on complex surfaces or allows manual intervention to remove inconsistent profile sections.

Laboratory Roundness Tester (R500)

  • R500 Roundness Tester: Top-tier machine for characterising revolution surfaces, especially known for its capability to measure large objects, leveraging SM’s thirty years of expertise.
  • Design: Specifically engineered to measure bulky and heavy pieces while maintaining high accuracy levels.
  • Three Metrological Axes: Pneumostatically supported axes ensure smooth, frictionless movements and robustness of the entire system.
  • Application: Primarily used for characterising bulky components in the energy sector (turbines, compressors, bearings) to determine crucial product quality aspects.
  • Motorized Plate: Allows automatic centering of the piece, operated within the Circom software for streamlined functionality.