Touchstone™ 2 Coating Thickness Gauge

Overview of the Touchstone 2

The Touchstone 2 coating thickness gauge is easy to use and requires no couplant, it will work on rough surfaces in any condition.

This coating gauge uses the magnetic properties of the substrate material to determine the coating thickness – ie the distance the sensor face is held off the steel by the coating. The Touchstone 2 Hall effect sensor will measure a wide range of non-magnetic coatings on ferrous substrates including;

  • paint, plastic, stainless steel, galvanised zinc, aluminium and tin
  • Highly accurate Hall effect sensor
  • Measures any non-ferrous coating
  • Measures up to 8mm of coating
  • Simple calibration and operation


Touchstone 2 Applications

ShippingTouchstone 2 Coating Thickness Gauge Application

Civil engineering





The complete Touchstone 2 kit includes:

  • Touchstone 2 coating thickness gauge
  • Steel block
  • Non-magnetic calibration block
  • Hall effect sensor
  • Full operating instructions
  • Spare 9v PP3 battery
  • Foam-lined black polymer carry case

Touchstone 2 Technical Specifications

Coating range: 0-8mm, 0-0.313 inches
Applications: Any non-ferrous coating on a ferrous material.
Resolution: 10 microns
Accuracy: ±10microns up to 1mm then 1.5%
Display: 12.5mm high 3½ LCD Display with micron/thou and low battery indicator.
Auto shut off: After 3 minutes inactivity.
Units of Measurement: Switchable between microns and thousandths of an inch
Unit Dimensions: 145 x 80 x 40mm
Unit Weight: 160g
Temperature range: -10ºC to +50ºC
Power Supply: 1 x 9v PP3 battery
Battery life: 40 hours nominal with a PP3 alkaline battery
Carry Case Dimensions:  220 x 200 x 80mm
Operational weight: 150g
Shipping weight 800g

1. Calibrate the sensor by placing it on both the uncoated steel block the non-magnetic calibration block.

2. Press the sensor firmly on the coated surface and the thickness of the coating will be displayed

American Bureau of Shipping Classification Society Manufacturing Process Approval
ISO 9001:2015 Certificate Number 14124458
NATO Stock Number 5220-99-464-9595
NCAGE Number U0B22
CE Mark Directives & Laws 89/336/EEC (Electromagnetic Compatibility)
IIMS Corporate Membership Number C508
NFPA Membership Number 2800960
FPA Membership Number 27135


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