KnowraInternational Prototype of the KilogramLinked fromLinked fromThe 11 pages that link to International Prototype of the Kilogram, each with the reason it gives.All 11Broader topic 6Related 2Compared with 3International System of UnitsCompared with: Its replacement demonstrates the limits of a unit defined by one physical artefact.KilogramBroader topic: Its replacement marked the end of artifact-based kilogram definition.International Bureau of Weights and MeasuresBroader topic: The BIPM safeguarded this prototype while national copies were compared against it.MetreCompared with: Unlike the metre's current definition, it was an artifact-based standard for mass.2019 redefinition of SI base unitsCompared with: Replacing this artifact ended the kilogram's dependence on one object's mass.General Conference on Weights and MeasuresRelated: Its long use shows how the Conference once anchored units to unique artifacts.International Committee for Weights and MeasuresBroader topic: The CIPM’s early institutional work included overseeing this shared physical mass standard.Metre ConventionBroader topic: It was a central physical standard produced under the convention’s system.IridiumRelated: Its stable platinum-iridium alloy made a durable mass standard, though it was not pure iridium.History of measurementBroader topic: Its eventual replacement exposes the limits of relying on a unique physical artifact.History of the metric systemBroader topic: The prototype embodied the artifact-based kilogram before its replacement by a constant-based definition.