With Android Gradiometer, you will be able to easily identify the graves, rooms, tunnels, etc. under the ground with high accuracy. With its easy to use, you will see its success in the field every time. You will experience the ease of 3D viewing on your mobile phone or tablet with the Android system. With its compact, ergonomic and economical structure, you will enjoy underground viewing in the field without cable clutter. With Android system operation, you can use the Android gradiometer to make use of your mobile phone or tablet, so you can search in real-time without the need for 3D or 2D imaging. With the live shot feature, you will see the image instantly on the tablet screen.