Sacred Cubit

The cubit, measured

A research archive on the cubit: how ancient builders measured it, what its length means in physics, and the copper models we design from it. Facts are sourced, calculations are shown, and hypotheses are labelled as hypotheses.

palm 1palm 2palm 3palm 4palm 5palm 6palm 7 52.32 cm 0
One royal cubit = 7 palms = 28 digits. Long ticks mark palms, short ticks mark digits.

Start here

  • History of the cubit

    The Egyptian royal cubit, Norse ells and the 83 cm unit of Teotihuacan, with sources.

  • Sacred Cubit

    52.32 cm, and why a 2-metre band antenna is almost exactly one royal cubit long.

  • Tensor Coil

    How the copper rings are built and how to measure their resonance with a NanoVNA.

How every model page is written

Each model page has the same five parts, so you always know what kind of statement you are reading.

  • 1. EvidenceHistory and archaeology, with a source for every fact.
  • 2. CalculationFrequency and geometry, with every formula shown.
  • 3. SpecificationCopper, gauge, length and measured resonance.
  • 4. HypothesisThe researcher's model, kept separate from the facts.
  • 5. RelatedLinked models and further reading.

Models

Cubit instruments on this site are research and design objects. Nothing here is medical advice, and no page claims that a cubit treats, prevents or cures any condition.