7 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 5102.20 Cover Sheet

  The Cover Sheet is the outermost folio of any bound docket in The Tower and the only leaf whose removal is permitted without annotation. In …

• MS 6579.40 Decommissioning Amp Archive

  The Decommissioning Amp Archive is the deposit established to retain the apparatus, transcripts, and residual paperwork generated whenever a…

• MS 0795.13 Floor 4001

  Floor 4001 is an administrative and vermicular floor of the middle-upper stack, situated between Floor 2001 and Floor 2004 and reached, in o…

• MS 5510.84 Hearing of the Bell
• MS 5697.04 Ordinary 44 (Glove Handling)
• MS 4352.44 Permanent Reference Bars

  The Permanent Reference Bars are twelve platinum-iridium rods, each one Standard Tower Unit (STU) in length, held in the Vestibule of Measur…

• MS 8753.06 The Principle of Symmetric Vacancy