Royal Cubit 7 palms x 4 fingers 4 digits 28 parts The royal cubit was 523 to 525 mm 20 6 to 20 64 inches in lengthArnold 1991 296 and was subdivided into 7 palms of 4 digits 4 fingers each for a 28 part measure in total I added the explanation that the palm is divided into 4 fingers or 4 digits of equal length p 31 Sacred Geometry by Stephen Skinner Sterling Publishing 2006 Brad Watson Miami FL 64 136 26 22