DeFelsko PosiPen® Coating Thickness Gage



PosiPen® has a very small, unique magnet which can be placed with pin-point accuracy on extremely small parts, and on peaks and valleys. Ideal for measuring non-magnetic coatings such as paint, enamel, plating, hot-dip galvanizing on steel.


Used For

  • Small, hot or hard-to-reach surfaces
  • Spot Checks – conveniently fits in a shirt pocket
  • Hot Sprayed Coatings

Ideal For

  • Refineries, petrochemical plants
  • Platers – electroplating, chrome, zinc, galvanizing
  • Powder coaters



  • Easy-to-Use
  • Lightweight – easy to carry, just like a ball point pen


  • No batteries / electronics
  • Rugged – not affected by mechanical shock, acid, oil, water and dust



  • No user adjustment required
  • Certificate of Calibration traceable to NIST included
  • Highly wear resistant probe tip for long life and continuous accuracy
  • Each PosiPen® has two scales mils (inch) and microns (metric)



  • Step 1. Place the tip of the PosiPen® on the coated surface and allow the magnet to contact.
  • Step 2.Pull the PosiPen® straight back from the object to be measured while keeping close watch on the appropriate indicator.
    Note the reading when the magnet releases.

Triple Indicator


The PosiPen® compensates for gravity when measuring in different positions.

  • Use the red/silver joining line when the Gage is horizontal (walls).
  • Use the green line when the Gage is pointing straight down (green/ground).
  • Use the blue line when the Gage is pointing straight up (blue/sky).


PosiPen® Specifications
English Metric
Range 0.25 to 20 mils 5 to 500 microns
Tolerance ± 10% and 0.1 mil ± 10% and 2.5 microns
Temperature -150° F to +450° F -100° C to 230° C

Conforms to National and International Standards including ASTM D7091/B499, ISO 2808 and others.

Certificate of Calibration traceable to NIST


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