Heavy rail / Urban light rail

Dimensional controls

Better understand fracture, wear and deformation phenomena for both new and used parts.


  • Take dimensional measurements (radius, diameter, depth, angle, etc.):
    – For complex and three-dimensional parts (precision: ± 3 microns)
    – For new or used parts – measurement of dimensions specified on the plan (railway safety components, equipment, etc.)
  • Measure shape and position defects: Straightness, flatness, circularity, cylindricity, circular shape, parallelism, perpendicularity, coaxiality, concentricity, etc.
  • Measure surface condition, thread dimension, threads or grooves

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  • 3D measuring machine (Tri-mesures)
  • Profile projector (Starett-Sigma)
  • Measuring column (Roch)
  • Numerous other measuring devices: Micrometers, gauges, roughness testers, etc.


Satisfied customers



- EN ISO 286 -

Geometrical product specifications (GPS) - ISO code system for tolerances on linear sizes.

- EN 22768-1 & 2 -

General tolerances - Part 1: Tolerances for linear and angular dimensions without individual tolerance indications - Part 2: Geometrical tolerances for features without individual tolerance indications

- NF F00-037 -

Railway equipment in general – Tolerances on metal parts - Permissible deviations on dimensions without tolerance indications - Allowance for machining

- NF ISO 965 -

ISO general purpose metric screw threads - Tolerances

- NF ISO 4288 -

Geometrical Product Specifications (GPS) - Surface texture: Profile method - Rules and procedures for the assessment of surface texture

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Failure analysis
Better understand fracture, wear and deformation phenomena for both new and used parts.
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Heavy rail - Urban light rail