2 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 1275.20 Hum

  Hum is a term of art within the Tower’s acoustic taxonomy, referring to any persistent, non-attributable low-frequency vibration or audible …

• MS 3295.76 Tome-Calipers

  Tome-Calipers are a category of specialized measuring instruments, standardized under Concordance 12, designed to interact with and quantify…