Q: What would be more accurate, my vehicles speedometer or a GPS I have on my dashboard? A: They both can be accurate and inaccurate. Speedometer: Aftermarket modifications, such as different tire ...

There’s something about the simplicity of a purely mechanical gauge connected directly to a vehicle’s ... representation of GPS data could be useful. And analog gauges are just plain fun ...

Built for simplicity, elegance, and extreme practicality, Speed is a GPS speedometer that uses the iPad’s location ... Speed won’t replace all the functions of your car’s dashboard, but it also offers ...

You can listen in on a two meter repeater and you can build a GPS module speedometer. That’s what [Jeremy Cook] did with just a few parts, a little 3D design, and some handy zip ties to hold it ...

RP You’re right that GPS is usually more accurate than a speedometer. By law, manufacturers have to make sure that cars’ speedometers don’t underread, and as a result, most of them set ...