In the grand scheme of things, it really wasn’t all that long ago that a slide rule was part of an engineer’s every day equipment. Long before electronic calculators came along, a couple of sticks of ...

You have that slide rule in the back of the closet. Maybe it was from your college days. Maybe it was your Dad’s. Honestly. Do you know how to use it? Really? All the scales? That’s what we thought.

The slide rule was considered cutting-edge technology for a long time and remained relevant even with the invention of a variety of other mechanical calculation devices. However, the ruler had ...

An appreciation of watches often takes you back in history. That is especially the case when you find yourself asking "what is that for?" A commonly misunderstood feature on some pilot watches is the ...

The protractor and the Bunsen burner. Playing the recorder in music class. Drawing arcs and circles with a compass in geometry. These tools of the education trade become part of our lives for a ...