the only wine glass with dimensions instead of adjectives
Built as a memo rather than a table: the thing worth hanging it up for reads across the room, with the full reference in smaller type below it.
Three sizes in one archive — from a sheet on the fridge to a poster on the wall.
Dimensions from ISO 3591:1977, nominal values without tolerances. The bowl profile is fitted so that the drawn bowl holds the same 215 ml; restaurant measures are 125, 175 and 250 ml.
The standard fixes two diameters: the widest part of the bowl at 65 mm and the rim at 46. Compare areas rather than diameters: 65² over 46² is 1.997 — a factor of two.
So the glass is not a shape but a concentrator: the wine evaporates from twice the area it escapes through. That is why you fill to the widest point — above it the surface shrinks, and the air under the rim shrinks with it.
A straight-sided tumbler has nothing to concentrate: its surface equals its opening no matter how much goes in.
Why the numbers can be trusted. Every countable number here is computed from data rather than typed in, and the sheet must pass 5 independent checks before it is allowed to build — how many items there are, the order they come in, and the claim in the highlighted box itself. If one fails, there is no file.
