Visibility Disc acc. to Secchi, 3m steel rope, ma Back Catalog number: 443590 Manufacturer: HYDRO-BIOS Availability: In the manufacturer's stock Price on request - + Recommended 438116-OUT Electronic Flow Meter for MultiNet Price on request 439016 Pressure Sensor max. depth 3.000metres (or to be Price on request 450536 Oxygen Sensor OxyGuard Ocean D.O. Probe Price on request