We produce high qualified geophysical instrument much cheaper. i.e.
1. Automatic resistivity meter ( multicahnnel)
2. Manual resistivity meter ( twin probe)
3. Induced Polarization
4. Sonic wave analyzer ( triaxial sonic wave sensor)
5. Digital time delay sonic wave
6. Low frequency accelerometer
7. Vibro-exciter ( low and high frequency)
8. Seismic Instrument

If you are interesting, please email-me for detail to hlkhairy [ at] yahoo.com.

We give 12 months warranty for whole of our product.