Hourglass Design

It consists of two glass tubes connected to a narrow tube where the sand will fall down and will fill the tube under one tube usually filled with sand flowing through a narrow tube to the tube underneath at a regular rate when the sand has fully filled the lower tube, This tool can be reversed so that it can be reused as an hourglass timer is a common name that refers to a glass of sand where this hourglass is used to calculate the time for an hour there is also an hourglass created with a total time varying from minutes to hour or hour
Hours of sand can be used as timers in quiz or adventure events
Hourglass has been known from ancient times until now there are still many people who use the hourglass and this hourglass can also be used to be a collection or decoration of the room or made a gift for someone or family and hourglass also many of his models from the usual model Ordinary to very luxurious there is also the shape and size vary from mini to large and here are some examples of images about the hourglass