Test atmospheres
Layout
Thickness
Magnetic properties of materials
Transportation
Packaging
Packing density
Magnetic tape recordings
Curvature
Marking
Cupping tests
Test equipment
Data media
Length
Width
Magnetic measurement
Opacity
Recording tracks
Tensile testing
Elongation
Reflective materials
Environment (working)
Track rows
Coatings
Dimensions
Data representation
Magnetic tapes
Electrical resistance
Data transfer
End
Coded character sets
Drums (materials handling equipment)
Recording characteristics
Mechanical testing