Gando, Samurai Searchlight
The Gando (龕灯) was a portable samurai period searchlight invented during the Edo period.
Gando consisted of a wooden, copper or steel coned cylinder closed at one end and featuring a wood or steel handle. The inside was highly polished to a near mirror-like condition, to better reflect and enhance the light of a single candle suspended in a gyroscopic gimbal of bottom-weighted rings. This allowed the Gando to be pointed in any direction, while continuously keeping the candle upright preventing extinguishing of the flame. To turn the light “out”, the unit could be placed open end down on the ground, and simply picked up to return to use.