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5 + a couple of extra uses

Surveying land boundaries and locating benchmarks

Navigation of cars, ships, and airplanes

To distribute accurate time around the world

Atmospheric measurements based on how the signals travel through the atmosphere

Measure motion of earthquake fault lines

Guide precision weapons to their target

Measuring changes in sea level

Measure heights of mountains

Fire trucks and ambulances use it to help them get to people in trouble

Boaters and pilots can stay on course with it

Drivers can find out where they are if their lost

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15y ago

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