Function: An hourglass is a device used to measure the passage of time by allowing a regulated trickle of material (such as sand) from an upper glass bulb to a lower one through a narrow neck.
Design: This specific model features a clear glass body, fine white sand, and a brass or gold-toned metal frame.
Usage: These timers are often used for managing time during activities like cooking, exercising, or games, and also serve as decorative items for homes or offices.
Duration: Sand timers can be designed to measure various durations, such as 1, 5, 15, 30, or 60 minutes, depending on their size and design.