My ‘relic’ is only around fifty five years old. No self respecting science or engineering student of the 1950s and 1960s would have been without a slide rule such as this. Many of today’s students may not even recognise one!
The box indicates how well loved, and used, mine was. Better still, it is as accurate today as when it was brand new. Oh, and there was no fear of the batteries running low on this beauty!
This is my entry in the weekly photo challenge at The Daily Post, where many more entries will be found.
