On Tue, 24 Dec 2013 David wrote:

On 24 Dec 2013 12:42:42 GMT, Derek Turner wrote:

On Tue, 24 Dec 2013 12:19:38 +0000, David Rance wrote:

Don't worry, I'm still using Centigrade (for temperature, of course).

David

Yes, the conversion to Celsius is a bugger, isn't it?


Not really if you only need it to the nearest degree.
Say the temperature is 72F, take 32 off (40) and divde by 2, so you have
20. Add on a tenth (2), so in Centigrade it's 22 - Actual conversion
22.22

59F 27 14 rounding up 14+1.4 15C rounding down

I suspect that Derek's humour is the same as mine and that he meant
conversion from Centigrade to Celsius!! Read the above again!

David

--
David Rance writing from Caversham, Reading, UK