Visibility Disc acc. to Secchi, 3m steel rope, ma Back Catalog number: 443591 Manufacturer: HYDRO-BIOS Availability: In the manufacturer's stock Price on request - + Recommended 443590-001 Spare Rope for Visibility Disc acc. to Secchi Price on request 439013 Conductivity Sensor type SST, max. depth 6.000met Price on request 439016 Pressure Sensor max. depth 3.000metres (or to be Price on request