Sand timer: An hourglass (or sandglass

An hourglass (or sandglass, sand timer, or sand clock) is a device used to measure the passage of time. It comprises two glass bulbs connected vertically by a narrow neck that allows a regulated trickle of material (historically sand) from the upper bulb to the lower one. Factors affecting the time interval measured include sand quantity, sand coarseness, bulb size, and neck width. Hourglasses may be reused indefinitely by inverting the bulbs once the upper bulb is empty. Full Screen version of our Sensory Sand Timer Countdown! A simple timer, that is part of our Sensory Timer section! Relaxing, easy to use timers for everyone! A beautiful minimalist digital sand timer app. Set custom times, choose activities, and find your flow with the calming hourglass animation. Perfect for work, study, breaks, and exercise. Shop DeoDap's 30-minute sand timer for kids, teachers, games, and classrooms. Enhance time management with this vibrant green hourglass. Shop now at the best price!