Spare Rope for Visibility Disc acc. to Secchi Back Catalog number: 443590-001 Availability: In the manufacturer's stock Price on request - + Recommended 445500 Rod Held Current Meter RHCM 270 Price on request 439013 Conductivity Sensor type SST, max. depth 6.000met Price on request 450536 Oxygen Sensor OxyGuard Ocean D.O. Probe Price on request