This slide presentation outlines water meter technology, specifically the meter-to-AMR (automatic meter reading) interface. Topics covered include: four reading technologies including visual remotes, electronic remotes, walk-by/drive-by, and fixed-network AMR; water meter basics; positive displacement meters; turbine meters; digital encoders; incremental digital encoders; water meters with incremental encoders; sensor requirements for incremental encoders; application of meters with incremental encoders; absolute digital encoders; sensor requirements for absolute encoders; and, incremental versus encoder.