Hero_Of_Time on 22 November 2009
My slide rule has been collecting dust for about 18 years now.
Let me guess based on that puzzled expression on your face, you do not know what a slide rule is.
slide rule
–noun
a device for performing mathematical calculations, consisting essentially of a ruler having a sliding piece moving along it, both marked with graduated, usually logarithmic, scales: now largely replaced by the electronic calculator.
