Rod Held Current Meter RHCM 270 Back Catalog number: 445500 Manufacturer: HYDRO-BIOS Availability: In the manufacturer's stock Price on request - + Recommended 438110 Mechanical Flow Meter Price on request 450536 Oxygen Sensor OxyGuard Ocean D.O. Probe Price on request 443591 Visibility Disc acc. to Secchi, 3m steel rope, ma Price on request