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zero *

A representation for an empty measure, or place.
      It is a mistake to assume that the absence of a particular form of zero meant the absence of a zero, as some notations do not need to have zero in all forms. For example, $1.05 can be made of a $1 coin and a 5c coin, with no requirement for anything to represent the empty 10c column.
      See abacus.

ZFPV *

A system based on a foot of 0.3 m, a pound of 0.45 kgs, and a vipala of 0.4 s. Used with sexigesimal numbers, it provides an interesting and quite natural system.
      The unit of Time is based on the Indian division of the day, and metric approximations to the Imperial System.
      TIME day \ 60 ghurry \ 60 pala \ 60 VIPALA of 0.4 s.
      LENGTh mile (1.080 kms) \ 60 chains (18 m) \ foot = 0.3 m \ 60 (5 mm) \ 60 (83.33 mm)
      AREA sq mile (1166.4 dka) \ 60 (19.44 dka) \ 60 (324 m2) \ 60 (5.4 m2)
      VOLUME cu ch (5832 cu m) \ 60 \ 60 Stere (1.62 m) \ 60 cu ft
      CAPACITY tun (1620 L) \ 60 Eimer (27 L) \ 60 Pints (0.45 L) \ 60 (7.5 mLs)
      WEIGHT tonne (1.62 t) \ 60 bushels (27 kg) \ 27 Pounds (450 g) \ 60 drams (7.5 g)
      SPEED 1 notch = 1 mile per gurry = 1 foot per vipala = 1 pace \ second = 75 cms/sec.
By adding a unit of charge at 1C / 24, electrical units form with the magnetic constant at 60^5.

zuber *

A tub with two handles, and so a measure of this size.
      G. der Zuber means zu (two) + ber (carry, bear), a pot with two carrying things see amphora, eimer.