The working principle: Pulse-echo mode (standard mode, used for ordinary thickness measurement), Echo-echo mode (coating mode, used to measure the net thickness of the substrate without removing the paint layer)
One point calibration: used for routine measurement;
Two-point calibration: increases measurement accuracy when measuring wall thickness of curved surface or in special application.
Measurement error: ±0.05 mm (less than 10 mm), ±5% H+0.01 (more than 10 mm) Note: H is the thickness of the object to be measured.
V path correction: v sound path correction to compensate nonlinearity of bimorph probe
Minimum scanning: drag the probe along the surface of the object to be measured, and the instrument can automatically find a place to measure the thinnest thickness.
Application software: UmView software is used to transmit, store, analyze and edit documents of measurement data (optional)
Has the function of penetrating the coating, the measuring range is 3-20mm.
Measuring range: 0.8-300 mm (Depending on the probe and the material to be tested, the standard measurement range:1-100mm)
Penetration mode: NO 3-18 mm
Working principle: Pulse-echo mode Pulse-echo mode, Echo-echo mode
Probe compensation line: A probe compensation line is built in 7 kinds of probe   compensation wires are built in and matched with 7 kinds of probes.
Measurement resolution: 0.1mm
Display: 128× 64 Dot   Matrix LCD Display with EL Backlight, Adjustable contrast
Repeatability: ±0.05mm
Unit and Display Resolution: Millimeter-0.01,0.1 inch-0.001,0.01
Calibration mode: zero calibration, two-point calibration
The measurement update rate: 4Hz
The sound speed range of the material: 1000～9999m/s or 0.0394～0.3937in/us
The storage function: divided into 5 arrays, which can store 500 thickness values.
Alarm function: set the thickness limit and give an alarm to the measured value outside the limit.
Sound speed storage: store the sound speed of 5 different materials.
Communication interface: USB interface or RS232 serial port (optional)
Power supply: two 1.5V AA batteries. When the power is insufficient, there will be a low voltage   prompt.
Operating time: Two No.5 Batteries can be used for 200 hours (no backlight)
Automatically shut down: after 5 minutes without operation
Working temperature: -10℃ ~+50℃, with special requirements up to -20℃
Size: 149*73*32mm

Ltekonline are the manufacturers of Mini Digital Ultrasonic Thickness Gauge for Metal Testing used to demonstrate engineering principles in Engineering Colleges, Engineering Schools and Ultrasonic Thickness Gauge for Engineering Teaching Lab in Universities