The thing is, all altimeters work off barometric pressure. That’s how the gadgets know you’re going up or down changing air pressure as you ascend or descend pushes in or pulls out a tiny membrane ...

You’re on the right track, Jacob. Suunto’s Core ($249 in the Lava Red Multifunction edition, which is pretty sharp) has all the basics: altimeter accurate to a meter, digital compass, watch functions, ...

The FAA is proposing a two-stage retrofit plan to ensure radio altimeters (RA) function as expected after new wireless spectrum is sold off and activated in the coming years. In a nearly 100-page ...