What this unit was
UK still-wine glass (175 mL) is modelled here as a liquid standard of the UK trade measure tradition, associated with United Kingdom during Current specified quantity. The converter represents one mL as 0.175 L; its basis is defined-serving-volume. This is a defined or exact matrix anchor.
Within that setting, the unit belonged to a working system for storage, rations, trade, and the circulation of drink or other commodities. It should be read with its period, locality, and evidential basis attached, not as a universal value shared by every culture using a similar name. A vessel name is not automatically the capacity of every surviving vessel.
Evidence of use and sources
The working value is traceable to GOV.UK specified alcohol quantities. Its record is classified as exact confidence and uses the stated basis rather than an assumed culture-wide constant.
Three directly pertinent excerpts from the supplied library are available.
“the use of grains of corn as a means of expressing small weights is very ancient”
British weights and measures as described in the laws of England from Anglo-Saxon times, PDF p. 22. small-weight practice
“Avoir de poiz weight is to be used for other commodities, for Merchandize, and for Grocers.”
A dictionary of weights and measures for the British Isles, PDF p. 51. commodity trade
“every barrel for ale shall contain xxxii. gallons”
A dictionary of weights and measures for the British Isles, PDF p. 61. regulated cask capacity
Working definition
UK still-wine glass (175 mL) is represented as a UK trade measure standard associated with United Kingdom during Current specified quantity.
The converter uses 0.175 L per unit.
How to use it
Basis: defined-serving-volume; confidence: exact. A shared historical name does not make this value portable to another period or polity.
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