[W126 Coupe] how to change 500 sec mercedes temp readinggaugefrom c to f

[Dan Landiss]

I could never remember whether to add (or subtract) the 32 before or 
after the ratio conversion.

So the new method is:

1) Add 40

2) Multiply by 5/9 or 9/5, depending on which direction you are converting

3) Subtract 40.

OTOH, scientists and darkroom photographers quickly learn that 20C = 
68F; and conveniently 10C = 50F; and we all know that 0C = 32F -- so the 
usual span is pretty well covered.

on 11/29/2011 10:46 PM Jay Hirsch wrote:

>                 35  C-= 96

> If i recall:  30C =  86 F

>                 15 C= 59 F

>                 10 C= 50 F

>                   0 C= 32 F

> Above 35 C  clothing optional... you are in summertime Arizona

> Above 15 C  means shirt sleeve weather

> Under 10C   means coat

> Under   0 C     sweater and coat


-- 
The greatest difficulty lies not in choosing between self-interest and the common good, but in knowing the difference.  --Stephen Horn

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