A Sand Timer is a device used to measure the passage of time, is majorly manufactured by Lexbax Sunshine International. The first hourglass, or sand clock, is said to have been invented by a French monk named Liutprand in the 8th century AD. The Sand Glass Timer is manufactured with “Borosilicate” glass with silica and boron trioxide as the main glass-forming constituents. Since they have one of the lowest thermal expansion coefficients of any common glass, borosilicate glasses are recognised to be more resilient to thermal shock. With us, you can buy Sand Timer online in larger numbers. The organization possesses Sand Hourglass for different time durations according to the requirements, such as we have sand clock timer online for 30 seconds, 1 minute, 2 minutes, 3 minutes, 5 minutes, 10 minutes, 30 minutes, and 1 hour.