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MA·2016.001 Class I Working collection
Pl. MA·2016.001 — the Patient Glass. Its sand runs one minute a day and is otherwise still.

The Patient Glass

An hourglass that runs for a single minute each day and is otherwise still.

Description
An hourglass made to measure a single minute. Its sand runs once in each day — beginning at 02:17, lasting one minute — and is otherwise still, in any orientation. It appears built to mark that minute rather than to time intervals freely.
Provenance
Among the collection at the Department's founding; the accession predates the present register, and the origin is unrecorded.
Condition
Glass and frame sound; the mechanism, such as it is, keeps perfect time.
Handling
Working collection. Fellows wishing to see it run should be present before 02:17.