DaveN

Pelham & Thurland Street Area

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On 11/28/2019 at 1:13 AM, philmayfield said:

At least you didn't have to guess where the decimal point went! 

Using a slide rule helped you get an idea of the order of magnitude of a calculation.

I remember once whist mentoring some young engineers I asked one to do some stress calculations to help design a test rig. When he came back to me with the result from his scientific calculator I immediately told him something was not right, not the actual numbers in the answer but the magnitude of the number and asked him to go and check what he had done. He came back later and rather sheepishly said he had got the decimal place wrong in one of the inputs. Still have my Thornton Comprehensive slide rule somewhere and if I thought really hard I could probably do a simple multiplication.

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