The Egyptians utilized three cubits: natural, Elephantine, and sacred, with the sacred cubit being 1/400 of the pyramid of Cheops' base, linking it to nature. This system influenced many cultures, including the Hebrews and Greeks, and it has led to eight definitions of the meter.
NPL is the UK’s National Measurement Institute, charged by the UK government to carry out research into innovative new measurement techniques, technology and best practice.
