Fusion Professional

The OKM Fusion Professional is a 3D ground scanner made in Germany by OKM GmbH. Everything sits in one carbon rod: OKM gives dimensions of 950 mm with a 65 / 80 mm body and a weight of about 1 kg, with a colour touchscreen on the rod itself, so the whole survey is configured in the field with no second box to carry. Two operating modes are available. Live Sound (Magnetometer) is an acoustic and visual magnetic-field measurement that flags ferrous metal near the surface in real time — OKM recommends using it to clear the scan field before an imaging run, and it is also the mode you keep running while you dig. The SRIS search coil at the base of the rod is a genuine search coil for locating metallic objects near the surface, activated manually by the operator; OKM lists rings, earrings, brooches, bracelets, necklaces, coins, buttons and badges among what it picks up. That coil and that live audio are the part of the instrument you can test yourself on a buried target before you ever open the software. The second mode, 3D Ground Scan, records the field line by line and hands the data to OKM Visualizer 3D Studio (Standard Edition) on the supplied pre-configured Windows notebook, which renders a colour-coded three-dimensional view of the measured ground so you can judge the position, size and depth of an anomaly before digging. Menu languages are English, German, French and Spanish, and scans transfer over USB 2.0. The electronics run a Cortex M3 (32 MHz) main CPU with a Cortex M0 (24 MHz) slave, sampling 1,024 values per second at 16-bit resolution, while Bluetooth 5.1 links the supplied wireless headphones out to roughly 10 m. OKM rates the internal battery at about 12 hours of operation from a roughly 3-hour charge, gives an operating range of −10 °C to 60 °C, and specifies IP40 protection — this is a dry-land instrument, not a waterproof one. On depth, OKM's own wording is that customers have found objects down to 21 m (69 ft); we pass that on as a manufacturer statement rather than a measured specification, because usable depth on any ground scanner depends entirely on target size, contrast and soil, and cavities or large chambers image far better than small metal. Supplied with a 2-year OKM warranty.