The world’s biggest sandglass is located in Nima Sand Museam, Shimane Prefecture, Japan.
The sandglass was given the name Suna-goyomi, which means ‘sand calendar.’
The height is 5.2 meters, the diameter of the container is 1 meter, and the diameter of the center nozzle is only 0.84 millimeters.
The total amount of sand is 1 ton, and it is falling at 0.032 g a second, 114 g a minute, 2740 g a day, 1 ton a year.
The fall speed is strictly controlled by pressure management using a computer.
The sandglass is turned over at 00:00 a.m, January 1st annually.
It was produced by Miwa professor, and the production cost was 100 million yen, the production period was three years.
I would like to see it directly someday.
By the way, the nozzle part is called orifice, or ‘hachinokoshi(means a waist of a bee)’ in Japan.
