Complex sentence: The book contains 187 folios, each measuring 22.5 x 15cm, consisting of the Roman Liturgy of the Hours, 24 calendar roundels, 20 full-page miniatures and 16 quarter-page format illustrations.
Split into simpler sentences: The book contains 187 folios, each measuring 22.5 x 15cm. It consists of the Roman Liturgy of the Hours, 24 calendar roundels, 20 full-page miniatures and 16 quarter-page format illustrations.