Rod Held Current Meter RHCM Back Catalog number: 445515 Manufacturer: HYDRO-BIOS Availability: In the manufacturer's stock Price on request - + Recommended 450536 Oxygen Sensor OxyGuard Ocean D.O. Probe Price on request 439016 Pressure Sensor max. depth 3.000metres (or to be Price on request 443591 Visibility Disc acc. to Secchi, 3m steel rope, ma Price on request