Ultrasonic Thickness Gauges: Four Tiers and What to Check Before Buying
The same category of instrument can differ fivefold in price. The difference is not the housing – it is velocity range, probe compatibility and signal processing.
Technical Articles
Cleaning and Protecting a Thickness Probe: A Checklist
The part that fails most often on a thickness gauge is not the circuit, it is the probe. Once the face is scored or the connector oxidises, the reading drifts – and most people blame the instrument.
Seven Ways to Measure Coating Thickness, and Which Ones Damage the Part
Coating thickness is not just “touch it with a probe”. From cross-sectioning to X-ray fluorescence there are more than seven methods, and picking the wrong one costs more than picking the wrong instrument.
13 Reasons Ultrasonic Thickness Readings Go Wrong, in Checking Order
Same gauge, same batch of parts, numbers that do not match. Most problems come from coupling, velocity and surface condition. Here they are in the order you should check them.
What a Portable Hardness Tester Can and Cannot Measure
A portable hardness tester is often treated as a tool that hits anything. In practice it has four hard requirements, and missing any of them makes the number meaningless.
Magnetic or Eddy Current? Choosing a Coating Thickness Gauge
Two physical principles, two substrate families. Pick by what the coating sits on, not by price or by which one the salesman has in stock.
How an Ultrasonic Thickness Gauge Calculates Wall Thickness
h = v x t / 2 is the whole principle. What decides accuracy is how well those two variables are measured.
Pocket Roughness Tester: What Shrinking Costs You
A palm-sized body has to fit a stylus, a drive, the electronics, a screen and a battery. Everything gives way a little, and those concessions are the limits of the instrument.
Ultrasonic Thickness Probe: Crystal, Frequency and Mode
Swap the probe on the same gauge and the range and accuracy change. Buyers compare main units; what decides whether a measurement is possible is the probe.
Keeping an Ultrasonic Thickness Gauge Trustworthy
The cost of a bad thickness reading is rarely rework. It is a thin wall that was never flagged. The maintenance routine is what keeps the number signable.
