alarm clock
alarm clock is a clock or timer.
Also recorded as alarm.
Overview
Its recorded use is implementation. 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
type of clock used to wake up a sleeping person at a certain 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
“Alarm clock”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q212758: alarm clock
Consult the source