Measure of length: .5236 x 1 meter
One royal cubit of the Ancient Egyptian weights and measures = 523.5 millimeters. ((523.5 mm)3) / 30 = 4.78221176 liters. Wikipedia, Hekat
See Also
Ancient Egyptian Units of Measurement Figure 11.09 - Eye of Horus - Egyptian Arithmetic Great Pyramid Hekat sacred geometry Schwaller de Lubicz The Temple In Man 6.4 - Sacred Geometry