Mechanical Flow Meter Back Catalog number: 438110 Manufacturer: HYDRO-BIOS Availability: In the manufacturer's stock Price on request - + Recommended 438116-IN Electronic Flow Meter for MultiNet Price on request 450536 Oxygen Sensor OxyGuard Ocean D.O. Probe Price on request 443590 Visibility Disc acc. to Secchi, 3m steel rope, ma Price on request