Spare Rope for Visibility Disc acc. to Secchi Back Catalog number: 443590-001 Availability: In the manufacturer's stock Price on request - + Recommended 439015 Analog Channel incl. calibration for AMT oxygen an Price on request 439013 Conductivity Sensor type SST, max. depth 6.000met Price on request 439011 Temperature Sensor -2 to + 32°C, max. depth 6.000 Price on request