Single or double-decker?
Ah yes, Waleses.
Also, don’t forget that you can measure volume in Isle of Wights.
Definitely Double Deckers.
Not the Nelson’s Column in Dublin. 
Back to the important topic in hand: in the interests of this thread, the SDMB in general, and science, I bought beer last night*.
In my local offie and supermarket, I noted the following can sizes:
250ml (super-stubby Heineken cans)
275ml (slim Becks bottles, £5 for six - a bargain if you don’t mind your recycling bin full of wieners)
330ml (bottles and cans, most denominations)
440ml (Grolsch, Heineken, Carlsberg)
500ml (almost all beer cans)
568ml (pint bottle of Bulmers/Magners cider - not beer but whaddayagonnado?)
660ml (big bottles of San Miguel & Tiger)
1,000ml (superbig bottles of something I forget)
So there you go - by adopting the friendly, nimble millilitre, we have thrown off the tyrannous yoke of ye Imperial sizing.
*I also drank it so you didn’t have to. I took on for the team, an act so noble it even moves me to tears.
I know I’m a total nerd/teacher.
K/h
The dash is the “per”.
I don’t personally want the English measurements to disappear, either. They’re mostly what I know.
OTOH, who makes a car nut that’s 9/32? You couldn’t make it 1/4 like at least the rest of the remaining stupid Empire? The metric people make do with less fine measurements for parts, but you have to make something in an uninterpretable mess.
Yeah , give em an inch and they take a mile.
Declan
I hate to correct a nerd/teacher, but it’s “km/h.” Been on our speed limit signs since 1977, though it has been disappearing over time.
Oh yeah?? Well, at least my mistake was a smaller one!
Unless it then looks like I’m trying to measure temperature per hour, which would be pretty much a mess. Darn.
Not necessarily: if you could track the gradient of increase of temperature In Here, you could use it to predict how soon people would be inclined to Take Off All Their Clothes.
Yeah you’re right, in Ireland at least it is km/h. Cardinal, thanks for the partial correction.