OLAC Best Practice for dimensions

Prerecording

Prerecording

Record for tangible resources. Do not record for online resources.

Recording

Option

Do not apply the option for online resources or discs. For all other resources: Apply the option.

Option

Follow LC practice and record the diameter of discs in inches.

Option

Follow LC-PCC practice. Apply the option.

Recording an unstructured description

Dimensions of carriers

Cards

Cartridges

Audio cartridges

Computer cartridges

Film, filmstrip, and video cartridges

Microfilm cartridges

Cassettes

Audiocassettes

Computer cassettes

Film and videocassettes

Microfiche cassettes

Microfilm cassettes

Discs

Filmstrips and filmslips

Flipcharts

Microfiches

Overhead transparencies

Reels

Audiotape reels

Computer tape reels

Film and videotape reels

Microfilm reels

Rolls

Film and microfilm rolls

Sheets

Slides

Three-dimensional forms

Globes

Other three-dimensional forms

Volumes

Dimensions of container

Multiple unit manifestations

Unbound sheets of text

Notated music

Manifestations in two or more containers

Change in dimensions

Recording a structured description

Recording an identifier

Recording an IRI

Document Date: 2026/02/06
Document: https://access.rdatoolkit.org/en-US_ala-8bd1b518-1d1c-3242-ba87-916e47dc772a