hourglass
hourglass is a timepiece or clock.
Also recorded as sandglass; sand timer; sand watch; sand clock; sandclock; sandwatch.
Overview
Its recorded use is chronometry. Catalogue entries for clocks state movement, case, dial signature and running condition. VALÉORINE records this subject so that lots referring to it can be described consistently.
In detail
device to measure the passage of time
Sources
Each source is named with the standing the house places on it, so the evidence can be weighed rather than taken on trust.
reference work · Reputable secondary · Wikipedia
“Hourglass”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q179904: hourglass
Consult the source