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Objective measurement of paint mottling

Article No. 6350

Control and guarantee a uniform finish – no more mottling

  • Objective and reliable values for QC and trouble shooting
  • Measurement results independent of color, curvature and
    surrounding light conditions
Click here for the Chinese price list in RMB
$30,650.00 €24,400.00 excl. taxes & shipping cost


Mottling is an undesired effect which is most obvious on light metallic finishes. These irregular lightness variations can now be objectively measured with the cloud-runner. Small design, ease-of-use and fast data collection make the mottling meter the ideal tool for batch approval and process control.

  • Measures under three angles to simulate different observing conditions
  • Ideal tool for the production line: small, fast and easy to handle
  • For flat and curved areas (radius larger than 50 cm)
  • Scan length can be selected on the mottle meter from 10 to 100 cm
  • Easy scroll wheel operation and large, multilingual display
  • Full statistics with ability to save in selectable memories
  • Docking station for data transfer to the PC and recharging the batteries of the mottling meter
  • smart-chart software for flexible data analysis and professional documentation

Technical Attributes

    Technical Specifications

  • Cloud Size

    Md: 6 to 13 mm

    Me: 11 to 24 mm

    Mf: 19 to 42 mm

    Mg: 33 to 72 mm

    Mh: 57 to 126 mm

    Mi: 100 to 200 mm

  • Repeatability (Std. Dev.)
    5% or > 0.5
  • Reproducibility (Std.Dev.)
    8% or > 0.8
  • Object Curvature
    radius > 500 mm
  • Scan Length
    10 to 100 cm, selectable in 1cm steps
  • Resolution
    25 points/cm
  • Light Source
    White Power LED
  • General

  • Measuring time
    < 4 sec.
  • Memory
    1000 readings
  • Interface
    USB port
  • Languages
    English French German Italian Japanese Portuguese Spanish
  • Power supply
    rechargeable battery pack, approx. 1500 readings
  • Weight
    0.65 kg
  • Weight
    1.5 lb
  • Operating temperature
    10 - 40 °C
  • Storing temperature
    0 - 60 °C
  • Operating temperature
    50 - 104 °F
  • Storing temperature
    32 - 140 °F
  • Relative humidity
    up to 85% at 35°C (95°F), non-condensing
  • Dimensions: L x W x H
    15 x 5.5 x 11 cm
  • Dimensions: L x W x H
    5.9 x 2.2 x 4.3 in

Delivery Content

Checking tile (6353)
Docking station with USB-cable (6351)
smart-process software with 2 licenses for download (4831)
2 rechargeable battery packs (6349)
Carrying case
1-day training


Paint Mottling Measurement

Today’s quality requirements for automotive finishes in regards to color and appearance are very high as it is proven that “the first impression” establishes lasting perceptual quality opinions extending beyond design and paint appearance. Therefore, the exterior finish of a car body and its add-on parts should be perfectly matching in color and appearance. Uniformity was and still is the most important criteria for perceived quality. For years, automotive manufacturers have assessed “mottling” visually - some have used panel sets with various degrees of mottling to assist their visual evaluation. But only when phenomena can be objectively measured, one can control and optimize it. 

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