protractor

protractor is a goniometer or mathematical instrument.

Also recorded as Protractors.

Overview

Materials recorded for it include plastic, glass and paper. Its recorded use is angle measurement. Catalogue entries for instruments state maker, signature, completeness and working condition. VALÉORINE records this subject so that lots referring to it can be described consistently.

In detail

angle measuring instrument

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
“Protractor”, English Wikipedia, consulted as further reading
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reference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q204984: protractor
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