Daaron's Radar Helper Device
(as described in "From Here to Implicity")
The “device” (his word) had a body like a jet cockpit, wing-like struts which proceeded from its sides, a small spinning cylinder for a nose and a curious handle connected to its rear end. On first sight I wondered if it was a space ship, a magic sword or, possibly, a pk valence meter (the Ghostbuster meter for detecting slime).
Daaron called the device a "radar helper". "Radar", because it used a kind of radar wave to scan into the essence of something and then bounce back a report on what it learned. He thought of it as a "helper" because it acted like a companion that could answer any of his questions about anything he encountered and do so through images and its own voice.