Ultrasonic Testing: Three Methods, Five Display Modes
Through-transmission, pulse-echo and tandem testing do not measure the same thing, and the echo can be shown five ways. Sorting out both lines makes a test report readable.
Technical Articles
Two Ways a Portable Roughness Tester Reads a Surface
Contact stylus or optical triangulation – the two principles behind every portable roughness tester, and where each one stops working.
Why a Split-Type Roughness Tester Separates Probe from Body
An integrated unit cannot reach a groove floor, a bore wall or a part already clamped in a machine. Splitting the two costs one cable and buys access.
Split-Type or Integrated Roughness Tester: How to Choose
A split-type tester costs more and needs a cable. Why do so many shops still buy one? The answer comes down to whether you need to reach the part, or just measure it quickly.
