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Digital Auto Multimeter 6000 Counts Backlight AC/DC Ammeter Ohm lcr Meter tester
Measuring range: 0.0-2.0mm
Resolution: 0.02mm / 1mil
Accuracy: 2% RDG ± 0.0.02mm (2% RDG ± 1mil) (only steel and aluminum)
Unit: mm, mil
Power: 3V coin cell battery (not included)
Product size: 80 * 42 * 22mm
Product weight: 34g (net weight without battery), 69g (total weight)
Packaging: card packaging
Automatic shutdown: The device will automatically shut down without any operation within 1 metal characteristics
For the magnetic method, the magnetism and surface roughness of the base metal of the standard sheet should be similar to the magnetism and surface roughness of the base metal of the test piece.
For the eddy current method, the electrical properties of the base metal of the standard sheet should be similar to those of the base metal of the test piece.
2.Base metal thickness
Check whether the thickness of the base metal exceeds the critical thickness. If not, use the method described in the precautions for calibration.
Measurements should not be made close to sudden changes in the test piece, such as edges, holes, and shall not be measured on the curved surface of the test piece.
5.Number of readings
Usually because the readings of the instrument are not exactly the same, several readings must be taken in each measurement area. Local differences in cover layer thickness also require multiple measurements in any given area, especially when the surface is roughed.
6, surface cleanliness
Before measurement, remove any adherent substances on the surface, such as dust, grease and corrosion products, but do not remove any covering