magnetic pattern: pseudo random code, incremental tracks, special code pattern
with or without hub, available hub materials: steel, aluminum, sheet metal
magnet material: hard ferrite, elastomer bonded ferrite, vulcanized ferrite, plastoferrite
accuracy: min. ± 25 arcsec., depending on outer diameter
operating temperature: - 40 to 250 °C (-40 to 482 °F), depending on magnetic material