Testing conditions
Data recording
Magnetic tape recordings
Electrical testing
Recording characteristics
Elongation
Holes
Clearances
Strength of materials
Form tolerances
Electrical wave measurement
Magnetic recording
Transportation
Interchangeability
Marks
Data media
Data transfer
Recording tracks
Locking and locating devices
Cupping tests
Test equipment
Performance testing
Electrical resistance
Transmittance
Cassettes (magnetic tapes)
Adhesion tests
Environment (working)
Data blocks
Recording equipment components
Optical measurement
Circuits
Performance
Data processing
Dimensions
Recording media
Magnetic tape equipment
Data layout
Magnetic tapes