An ultrasonic range finder is a useful tool in a variety of real-life and robotic applications, such as in obstacle-avoidance and distance-measurement systems. The ultrasonic range finder measures the ...

Instructables user [Jones Electric] has been quite busy lately, building a radio-frequency range finder. Built as part of a German youth science competition, he and his partner built a pair of ...

With its Tour X Jolt laser range finder, Bushnell Golf has a distance-measuring device that seemingly does everything. It allows users to measure distances (up to 450 yards to a flag) and can adjust ...

Eye-safe laser with exceptional measurement range Very small and lightweight Meets military standards Uses commercial batteries; consumes very little power Simple two button, single-handed operation ...

You can’t argue with the results of large-format film cameras — picture the boxy bellows held by a cigar-chomping big-city press photographer of the 1940s — but they don’t really hold a candle to the ...