Inventory Amp Cataloguing

Definition

Inventory Amp Cataloguing (conventionally abbreviated IAC) is a registered floor-level practice under which items already entered into an Inventory are re-addressed through a standardised Cataloguing Amp in order to confirm that their catalogued state has not drifted since entry. It is administered by the Office of Acquisitions Amp Stasis and shares its jurisdictional boundary with Isolation Amp Cataloguing, from which it is distinguished solely by whether the item in question has, at the time of the ping, an inventory number.

IAC is not a method of discovery. Items are never located by IAC; they are located by ordinary shelf survey and then addressed. The practice answers one question: whether the entry in the standing Material Inventory still holds. Where it does not, the discrepancy is filed rather than corrected.

Procedure

The operator initiates a sustained low-amplitude ping using a standard Cataloguing Amp, set to its pre-calibrated isolation mode, and records the returned Target Depth against the depth stored at the item's last entry. A match is entered as "quiet." A divergence is entered as "raised" or "sunk" depending on direction. Neither result alters the item's physical position; the depth in question is a catalogual depth, not a spatial one, and the distinction is the single most common source of complaint from visiting surveyors.

Where an item returns a raised reading on three consecutive passes, it is escalated to a Type-VII-C instrument under Taxonomy Amp Cataloguing for a full re-classification. Where it returns a sunk reading three times, it is escalated nowhere; sunk readings are considered an ordinary feature of older entries and are annotated with the suffix dim., short for diminished record.

Doffing and Amp Deactivation are conventionally performed at the conclusion of a session, as under Isolation Amp Cataloguing. In practice this is observed more reliably on floors with a Librarian in residence.

Jurisdictional history

The practice was formalised following the Re Mapping Amp Re Cataloguing Phase Iii programme, during which the Cataloguing Amp was integrated into the standing protocols and the question of which floors owned the ping became acute. The Bureau of Registry adjudicated the initial boundary in the Third Concordance, Annex 11, assigning all items bearing a live inventory number to IAC and all items lacking one to ICAD. The ruling held for eleven years.

The boundary was reopened by the discovery, on floor 882, of The Self-Excluding Inventory (PA-882), a list which does not include itself. Under the Registry's original reading, the inventory's entries qualified for IAC while the inventory itself did not, producing a session in which a single Amp was required to address a document's contents under one practice and the document under another. The matter was referred to the Bureau of Paradoxical Inventory, which has held it since.

"An item is catalogued when it is entered, and re-catalogued when it is addressed, and neither act is the other, and the Amp does not know the difference."

— Fifth Concordance, Annex 3, §2

Disputed scope

Two readings of IAC's scope are current. The narrow reading, held by the Office of Acquisitions Amp Stasis and reflected in the Electrics Amp Conduits Chapter of the standing manual, holds that IAC applies only to items on open shelving and excludes anything held within Quarantine Amp Buffering or otherwise under seal. The broad reading, argued in the marginalia of the Fourth Concordance and never formally adopted, holds that sealed items are the most in need of a quiet ping precisely because no one is looking at them.

The disagreement has practical consequence: under the broad reading, a sealed case is re-verified nightly; under the narrow reading, it is not verified at all until opened. Floor-keep records from the winter of the long inventory suggest sealed cases drift at roughly twice the rate of exposed ones, though the Office has declined to treat this as decisive.

Notable incidents

In the third quarter of a year recorded only as "prior to the Ninth Recension," a clerk named Halloway conducted a full IAC sweep of a corridor of stacked Material Inventory crates and returned 1,204 quiet readings, 11 raised, and one reading that returned no depth at all. The empty reading was logged as unfiled. Halloway petitioned the Bureau of Registry for clarification of unfiled and was informed that the term denotes an entry awaiting a number, not an item awaiting an entry. The petition remains open.

Separately, the practice has twice been confused with Stamen Amp Pistil Stages catalogueing by staff transferred from botanic floors, resulting in sessions that addressed plant parts rather than holdings. The Office notes, without comment, that the readings were all quiet.

Visiting

IAC sessions are open to observation from the mezzanine rail only. Visitors may not speak during a ping; a single vocalisation invalidates the pass and requires a full recalibration of the instrument. Visitors are also reminded that the depth returned by the Amp is not a measurement of the floor beneath them, and should not be used as one.