Phonographic cylinder
AKA
        
    Wax cylinder, ediphone, dictaphone, graphophone
    Era
        
    1888–1929
    Format
        
    analog
    Developed by
        
    Thomas Edison
    (Max) Capacity
        
    2 minutes
    Size
        
    Various
    Fun facts
    - This format had several different material compositions: brown wax (metal soap), molded wax (metal soap), and Blue Amberol (celluloid)
- Early brown wax cylinders would commonly wear out after they were played only a few dozen times
- While this format was typically 2.25” in diameter and around 4.25” long, they could be smaller (1.33" in diameter) or larger (5" in diameter)