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 ...

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 ...

Garmin has added a laser range finder to their distance-measuring device options, the Approach Z80. The scope of the range finder provides the same visual you’d expect from a range finder—locking in ...