other · Various · Modern / historical

pyramid inch

discredited

Record: M412
Definition quality: Pseudoscientific / discredited claimed unit
Conversion mode: contextual
Calculator: Context-only calculable

Never imply ancient Egyptian attestation.

Definition

Smyth claimed the unit; Smithsonian and Whipple histories frame pyramid metrology as failed/discredited.

Reference value

One pyramid inch is equal to 0.0254254 contextuals.

History & use

Smyth claimed the unit; Smithsonian and Whipple histories frame pyramid metrology as failed/discredited.

Modern use

Modern-use scope is context-dependent; the website should follow the record's current-status and regional/system labels rather than imply universal use.

Did you know?

This record is included as a lesson in measurement history: a claim can be historically interesting without being scientifically valid.

Sources & evidence

Source tier Tier B/C — recorded secondary/reference source · confidence High

Related measurements

metre

length · International · Modern

SI base unit of length. Its definition fixes the speed of light in vacuum at exactly 299,792,458 m/s, with the second defined from the caesium-133 hyperfine frequency.