Light aircraft often use a heading indicator as a way to know where they’re going. Retired instrumentation engineer [Don Welch] recreated a heading indicator of his own, using cheap ...

Sensors monitoring Aberdeen’s geothermal heating potential are being installed underground throughout the city. The 100 sensors, or seismic nodes, are being placed across a mixture of public and ...

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Combining a database with over 1.5 billion shots, GPS and an ultra-accurate laser, the Arccos Smart Laser goes far beyond distance and slope.