[edger]

My old K&E Log Log Duplex Decitrig hung on my belt all through college. I still have it. I also have an assortment of circular sliderules. And an abacus or two. And my first several calculators crapped out long ago.

With the sliderule, answers were always approximate--always. The calculator or computer answer to six decimal places gives the illusion of accuracy that is nonexistent.

With the sliderule, you had to keep track of the decimal place--it was the operators responsibility--and it was good practice. While using the abacus, I found myself doing more and more work in my head.

A good time long gone.

[cinFLA]

With the sliderule, answers were always approximate--always.

Especially when the slide falls out.