DITDA is instrument for ultrasonic wave velocity measurement. Basically DITDA has same function with SOWAN. But in DITDA we do not need oscilloscope to display the result. The wave propagation time....
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....
IPMGEO is upgrading instrument of Resisitivity meter either twin probe or multichannel with IP ( Induced Polarization) . This instrument also upgradeable to 16, 32, 64 max 1000 channels.