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A Roman steelyard weight of one dodrans, i.e. 3 ⁄ 4 libra. The units of weight or mass were mostly based on factors of 12. Several of the unit names were also the names of coins during the Roman Republic and had the same fractional value of a larger base unit: libra for weight and as for coin. Modern estimates of the libra range from 322 to ...
The solidus was also a Roman weight unit. There is literary evidence that the weight of 72 coins of the type called solidus was exactly 1 Roman pound, and that the weight of 1 solidus was 24 siliquae. The weight of a Roman pound is generally believed to have been 327.45 g or possibly up to 5 g less.
English-speaking countries also used a system of units of fluid measure, or in modern terminology volume units, based on the apothecaries' system. Originally, the terms and symbols used to describe the volume measurements of liquids were the same as or similar to those used to describe weight measurements of solids [33] (for example, the pound by weight and the fluid pint were both referred to ...
1 Roman cubit = 444 mm (so 10000 Roman cubits = 4.44 km, a closer approximation to 1 ⁄ 25 degree) toise – Fathom, 6 pieds. Originally introduced by Charlemagne in 790, it is now considered to be 1.949 m. arpent – 30 toises or 180 pieds, 58.471 m; lieue de poste – Legal league, 2000 toises, 3.898 km
The dram (alternative British spelling drachm; apothecary symbol ʒ or ℨ; [a] abbreviated dr) [4] [5]: C-6–C-7 [6] is a unit of mass in the avoirdupois system, and both a unit of mass and a unit of volume in the apothecaries' system. [5] It was originally both a coin and a weight in ancient Greece. [7]
Roman and Chinese steelyards were independently invented around 200 BC. Steelyards dating from AD 100 to 400 have been unearthed in Great Britain . Steelyards and their components have also been excavated from shipwrecks of the Byzantine period in the Mediterranean and the Red Sea, such as the 7th-century wreck at Yassi Ada , Turkey , and the ...
As relevant to this article, it was a unit of mass, being 120 lb (54 kg). Grzywna; Keel – a UK unit of mass for coal, equaling 21,540.19446656 kg (47,488.0000000 lb) [7]: 48 Large sack – a unit of mass equal to 2 (new) sacks; Long ton; Lot; Mark; Munjandie; Oka; Pao; Passeree – a unit of mass equal to about 4.6 kg (10.1412640605 lb ...
This pound was progressively replaced by a new pound, based on the weight of 120 silver dirhems of 48 grains. The new pound used a barley-corn grain, rather than a wheat grain. [29] Avoirdupois (goods of weight) refers to those things measured by the lesser but quicker balances: the bismar or auncel, the Roman balance, and the steelyard. The ...