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MiniTest 70B Coating Thickness Gauge

Made in Germany
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MiniTest 70B-FN - Combination Ferrous & Non-Ferrous Model

The MiniTest 70B is a pocket sized, versatile and accurate thickness gauge with built-in sensor. It is a lightweight and handy coating thickness gauge in a pencil format with a built-in sensor. Especially designed for easy operation, this gauge is the ideal tool to measure any non-magnetic coatings on steel and/or any insulating layers on non-ferrous metals. The spring-mounted sensors are equipped with wear-resistant sensor poles and ensure durability even when used for measurements on rough and abrasive substrates.

Designed for measurement on non-ferrous metals can measure insulating coatings such as paint, enamels, anodic films, etc, on non-ferrous metal bases such as aluminium, copper, brass, etc.

And for measurement on ferrous metals, non-magnetic coatings such as paint, enamels, chrome, etc., can be measured on ferro-magnetic bases such as constructional steel, car bodies, etc.

The MiniTest 70B Series provides accurate, non-destructive coating measurements on steel and non-ferrous metals. Also, the FN model is equipped with a dual sensor for automatic identification of the substrate. According to the substrate, it adjusts to the appropriate measuring principle: magnetic induction or eddy currents principle.

Measuring range 0 to 3 mm on steel substrates and 0 to 2.5 mm on non-ferrous metals.


  • Pocket sized, compact coating thickness gauge
  • For fast and precise measurements of non-magnetic coatings on steel and insulating coatings on non-ferrous metals
  • Lightweight: only 80 grams
  • Easy 2 button operation
  • Built-in spring-mounted sensor
  • Enables 1-point calibrations
  • Automatic identification of the substrate material
  • Built-in sensor

Complete Kit

The MiniTest 70B Coating Thickness Gauge is delivered as a complete kit with:
- MiniTest 70B - Calibration foils
- Operating instructions
- Gauge tether
- Belt pouch

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Certified Plastic Shims / Foils for Coating Thickness Gauge Calibration and Verifications


Measuring RangeFerrous Substrates: 0 - 3 mm (0-120 mils)
Non-Ferrous Substrates: 0 - 2.5 mm (0-100 mils)
Measuring PrincipleMagnetic-induction / Eddy currents
Signal ProcessingSensor integrated 32-bit signal processing (SIDSPĀ®)
Accuracy± (2 µm + 3 % of reading) with 1-point calibration
Repeatability± (2 µm + 1 % of reading)
± (0.04 mils + 1% of reading)
Low range resolution10 µ
Minimum curvature radius convex50 mm
Minimum curvature radius concave40 mm
Minimum measuring area⌀ 50 mm
Minimum substrate thicknessF: 0.7 mm
N: 0.1 mm
Measuring unitsMetric/Imperial switchable
Calibration modes1-point calibration
Operating temperature range-10 to 60 °C (14 - 140 °F)
Storage temperature range-20 to 70 °C (-4 - 158 °F)
Power supply1xAA (Mignon)-battery
International standardsDIN EN ISO 1461, 2064, 2178, 2360, 2808, 3882, ASTM B 244, B 499, D7091, E 376
DimensionsApprox. 157 mm length, ⌀ 27 mm
Weight incl. batteryApprox. 80 g (2.8 oz)
Warranty1 year


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Item Description Price
MiniTest 70B-FN Coating Thickness Gauge, Combination Ferrous & Non-Ferrous Model; Range: F: 0 - 3 mm (0 - 120 mils) / N: 0 - 2.5mm (0 - 100 mils) - MIN/007017
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