Character position definition and scope:

A one-character alphabetic code indicates the width of the tape.  Cassette implies code l, cartridge implies code m, and tape reel also implies code m.  A fill character ( | ) is used when no attempt has been made to code this position.

Record requirements for National-level and Minimal-level records:  Optional.

Guidelines for applying content designators:




1/8 inch  Most cassettes use 1/8 inch tape.


1/4 inch  Nonprofessional, consumer, and some professional reels, and most 8-track cartridges use 1/4 inch tape.


Not applicable  The item is other than a tape or does not include a tape (e.g., if the item is a disc).


1/2 inch  Recording studios customarily use 1/2 inch tape.  Some 8-track cartridges have been issued in 1/2 inch tape.


1 inch  Recording studios often use 1 inch tape.  Some 8-track cartridges have been issued in 1 inch tape.




Other  A tape width for which none of the other defined codes is appropriate.


No attempt to code

Content designator history:

Character position 05 (Tape width) was moved to position 07 when field 007 was restructured in 1981.

a1/4 inch  [obsolete]

b1/2 inch  [obsolete]

c1 inch  [obsolete]

Prior to 1981, these tape widths were identified by codes a, b, and c, respectively.  In 1981, the codes were changed to m, o, and p, respectively.

To return, select:

007:  Sound recording

007  Physical Description Fixed Field