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New 12 sided £1 coin is now in circulation


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Anyone know why the new coin is going to be dodecagonal. I thought coins had to have an odd number of sides in the shape of a Reuleaux polygon to facilitate being used in vending machines which read (constant) diameter … as in the 50p.

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So is that 'threppenny' bits or 'thruppenny' bits?

 

Certainly pronounced as if thruppenny

 

---------- Post added 28-03-2017 at 10:02 ----------

 

Anyone know why the new coin is going to be dodecagonal. I thought coins had to have an odd number of sides in the shape of a Reuleaux polygon to facilitate being used in vending machines which read (constant) diameter … as in the 50p.

 

I don't know the answer, but could it just be that above a certain number of sides, the shape approaches that of a circle, to the point where

a) it rolls easily, and

b) the change in diameter, as it rolls, is so small that machines can still recognise what it is.

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Anyone know why the new coin is going to be dodecagonal. I thought coins had to have an odd number of sides in the shape of a Reuleaux polygon to facilitate being used in vending machines which read (constant) diameter … as in the 50p.

:huh:

Hmmm...

 

... well, it's obviously a cunning plan by them pesky Brexiters to reintroduce our pre-decimalisation currency... :suspect:

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Certainly pronounced as if thruppenny

 

---------- Post added 28-03-2017 at 10:02 ----------

 

 

I don't know the answer, but could it just be that above a certain number of sides, the shape approaches that of a circle, to the point where

a) it rolls easily, and

b) the change in diameter, as it rolls, is so small that machines can still recognise what it is.

 

It were aiius threppenny bit when I were a lad thruppenny wert t' posh version.:P

Edited by TORONTONY
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