A Must Have For Any Pool/Pond Owner or Professional Pond Builder * Easy To Read Odometer, Lets You Know Exactly How Much Water Is In Your Pond * Fits Directly on to a Water Spigot With Garden Hose Thread Swivel Adaptors * Determine proper:Bacteria & Water Treatment Rates, Proper Fish Medication Dosings & Stocking Levels * Attaches to standard hose bib or garden hose with included brass fittings