Recording characteristics
Data layout
Interchangeability
Elongation
Data recording
Magnetic recording
Environment (working)
Data media
Electrical resistance
Adhesion tests
Dimensions
Holes
Thickness
Containers
Information exchange
Testing conditions
Optical measurement
Cupping tests
Transmittance
Length
Strength of materials
Electrical testing
Lids
Cassettes (magnetic tapes)
Recording tracks
Design
Recording equipment components
Specimen preparation
Performance testing
Curvature
Magnetic tape equipment
Width
Magnetic tapes
Test equipment