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Planimeter, able to measure to hundreths of a square inch. It was used by foresters to measure the scaled mapping area of forest stands...

Here’s an analytical stereo plotter, connected to a CAD mapping systems. I was making my living running this on 2nd shift while...

I took three years of architectural drawing in highschool. Just enough to realize it was not where I wanted to go in life (although it...

Not really. If you restrict most units to their base function - displaying lat/lon while using a paper map - batteries last a very long...

Here's one that most people won't recognize. Well, ppine might...

I use a map and compass for my navigation tools (no batteries to go dead). As nice as the GPSs are, they are battery hogs. I would...

This was my air navigation computer. it is a circular slide rule, among other flight calculation tools. The reverse side is used for...

I do a fair amount of finish carpentry...those folding rules are the best for precise, inside measurements. Slide rules, yeah, I relied...

I will never consider a compass as obsolete. it is my primary navigation tool and will remain so, even though at times I do carry and...

The GPS is nice, but the compass is still mandatory, as far as I'm concerned.

The question should be: "If an item still works and is useful, is it truly obsolete?" I still carry a compass even when I have a GPS...

Dam #9 Allegheny River PA Highest dam on the Allegheny...27'. Locals say that the face of this dam has never frozen before this year.

Lakes freezing over are one thing. When I see the Snake River freezing over, I know winter is really here. No winter for us this year.

Yes. We used the engineers rule. And the architects rule. I have an undergrad degree in geography. When I started environmental...

Still use the foldable ruler, and I'm young enough that they were mostly on the way out when I was a kid. Good, solid, high-contrast...