Once in a while we need to measure along a curved surface. How to do that? Reach into the sewing basket and pull out the sewing tape measure. Mine has inches on one side and inches plus millimeters on the other.
Works like a charm!
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Aero ‘lectrics
You need never again be greeted by a dead battery because you left the master switch on. With a few dollars’ worth of parts, you can build a simple alarm system.
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Light Stuff
The rules around Letters of Deviation Authority are labyrinthine, which helps explain why they are relatively rare. But the problems could be—and should be—corrected through a few regulatory changes. By Roy Beisswenger.