It was introduced to Japan from the late Edo period to the Meiji period and was also called "yōtō". The glass shade (the part that covers the flame) protects the flame from the wind, and the brightness of the flame can be adjusted by changing the length of the wick with the adjustment screw. Width 10.6 cm, Height 11.2 cm, Base diameter 5.8 cm Please judge from the photos. No claims, no returns, please.