16 holdings are shelved on this floor. A shared floor records where volumes sit and nothing about what any of them says; these are neighbours, not relations.

• MS 0947.59 Bureau of Calibration

  The Bureau of Calibration is the Tower's senior office for the adjustment of instruments to their declared measures, and is not to be confus…

• MS 7896.61 Bureau of Intentional Measurement
• MS 0380.38 Clerk Hanal of the Theta Wing
• MS 3463.27 Concordance 22 Addendum 7gamma

  Concordance 22, Addendum 7γ is a legislative supplement of foundational importance to the administrative structure of the Middle Floors. Pro…

• MS 9219.26 Concordance 23

  Concordance 23, also formally designated as Concordance XXIII or the Spiral Concordance, is the official governing document for Floors 14–19…

• MS 3017.76 Discrepancy Form 37-A

  Discrepancy Form 37-A (also known formally as the Initial Anomaly Reporting Instrument (IARI) 37-A) is the standardized, triplicate document…

• MS 5788.48 Index of Withheld Chapters
• MS 3177.70 Junior Indexer Arrin
• MS 1775.34 Notational Translation

  In Tower administrative linguistics, Notational Translation denotes the authorized conversion of a catalogued subject’s state or properties …

• MS 8160.81 Office of Protocol Drafting
• MS 0841.17 Protocol Selection
• MS 9474.72 Referential Stability

  Referential Stability is the measured tendency of a catalogued subject to remain the same subject across successive consultations, recension…

• MS 0438.10 Scriptorium of Second Copies
• MS 4235.54 Second Register of Marks
• MS 2557.41 Silhouette Swallowtail
• MS 4885.51 Threnodic Frequencies