5 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 1711.63 Guild of Exactitude

  Guild of Exactitude is one of the nine Recognized Guilds of Measurement and is responsible for the establishment, maintenance, and certifica…

• MS 7996.98 Matter of the Empty Menagerie
• MS 5356.91 Uncalibrated Parallelism
• MS 3558.39 Ventilation Amp Environmental Shafts

  Ventilation Amp Environmental Shafts constitute the tertiary circulatory and atmospheric modulation network within the Tower's primary struc…

• MS 5183.18 Zeta () Permits