Signal level
Dimensions
Length
Width
Interchangeability
Information exchange
Data media
Magnetic tapes
Reflection factor
Magnetic recording (data)
Opacity
Thickness
Recording characteristics
Product specification
Virgin media
Magnetic recording
Form tolerances
Coatings
Environment (working)
Drums (materials handling equipment)
Identification methods
Data recording
Data transfer
Digital recording methods
Electrical resistance
Force
Mechanical testing
Dimensional tolerances
Testing conditions