DeFelsko PosiTector N90S Probe

DeFelsko PosiTector N90S Probe for measuring coating thickness on non-ferrous substrates.


DeFelsko PosiTector N90S 90° Cabled Probe for measuring coatings on non-ferrous substrates in hard-to-reach places. These stainless steel probes are hermetically sealed to be waterproof.

Choose between a Standard or Advanced Gauge Body. A Standard Gauge Body can store up to 1,000 readings per probe. An Advanced Gauge Body can store up to 250,000 readings from multiple probes in up to 1,000 batches and sub-batches. Both DeFelsko Gauge Bodies are compatible with all PosiTector probes. DeFelsko Gauges feature a fast measurement speed of 60+ readings per minute or up to 90+ readings in enhanced FAST mode.

N90S Range

0-25 mils (0-625 µm)

N90S Accuracy:

± (0.02 mils + 1%) 0 – 4 mils± (0.5 µm + 1%) 0 – 100 µm
± (0.1 mils + 3%) > 4 mils± (2 µm + 3%) > 100 µm

*Accuracies are stated as a fixed value plus a percentage of the gauge’s actual reading.

The PosiTector N90S Probe is compatible with PosiTector Smartlink and fully interchangeable on both Standard and Advanced gauge bodies. Compatible with DeFelsko’s PosiSoft Software for viewing, analyzing, and reporting measurement data.

To select the proper probe for your application, please see DeFelsko’s Ordering Guide.

Stone Tucker Instruments is able to certify your PosiTector N90S Probe. Click here to fill out our RMA Form.

Weight1 lbs
Dimensions8 × 5 × 2 in

DeFelsko’s PosiTector N90S Probe comes with:

  • Precision Plastic Shims
  • PosiSoft Software
  • Instruction Manual
  • Two Year Warranty
  • Long Form Certificate of Calibration traceable to NIST or PTB

DeFelsko Working Shims

Plastic Shims

PosiSoft Software

PosiTector Smartlink

Click here to download the DeFelsko PosiTector 6000 Datasheet