- Rounded up to next whole centimeter
- “cm” and “mm” are symbols, not abbreviations
- use ISBD full stop after symbol only if a 490 field appears in the record (YUL alternative: or just leave out the period in all cases; member copy: take whatever punctuation is used)
Serials: Not core for CONSER. YUL policy: add dimensions to member copy; record dimensions in original cataloging
Audio: LC practice for Alternative: Use inches for discs (RDA 22.214.171.124.4) and for all audio carriers; otherwise, follow the RDA instruction as written (abbreviate as “in.”)
Microfilm: record diameter of the reel in cm, followed by the width of the film in mm, e.g. 11 cm, 25.4 mm (126.96.36.199.9)
Refer to RDA 3.5 for other media.