(n.) A standard of judging; any approved or established rule or test\, by which facts, principles opinions, and conduct are tried in forming a correct judgment respecting them.

Procrustean law acid test adjudgment antetype antitype archetype assay barometer benchmark biotype blank determination brouillon canon check classic example code crucial test crucible degree determination docimasy epitome essay feeling out first draft form formality formula formulary fugleman fugler gauge genotype graduated scale guideline imitatee judgment kiteflying law law of nature lead maxim measure mirror model norm norma ordeal order of nature original paradigm parameter pattern precedent prescribed form prescription principle probation proof prototype quantity reading readout regulation representative rough draft rough sketch rule scale set form sounding out standard standing order test test case touchstone trial try type type species type specimen universal law urtext value verification yardstick