Sand Timer Diagram

This helpful diagram provides a clear cross-sectional view of a classic sand timer, often referred to as an hourglass. It visually explains how these fascinating devices measure time. The illustration highlights the core elements, including the granular material, typically sand (4), moving through a precise central constriction (1). This narrow passage ensures a consistent flow driven by gravity, allowing the sand to empty from one bulb into the other over a specific duration. The external casing (5) provides protection and structure for the time-measuring bulbs. The small detail at point 2 could represent an inlet, a seal, or another specific feature of this particular timer's design, emphasizing the intricate simplicity of this ancient timekeeping instrument.

sand timer - hourglass - diagram - timekeeping - internal structure - cross section - time measurement