perfect ruler
perfect ruler is a sparse ruler.
Sources
Each source is named with the standing the house places on it, so the evidence can be weighed rather than taken on trust.
- 1.
“Perfect ruler”, English Wikipedia, consulted as further reading
reference work · Reputable secondary · Wikipedia
Consult the source - 2.
Wikidata, structured authority record Q7168097: perfect ruler
reference work · Reputable secondary · Wikidata
Consult the source
Elsewhere in Scientific instruments
667 published records in this field, each with its sources named.
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Best supported in this field