Product Material: Brass and Glass Country of Production: India Weight: 0.87 lbs (0.396 kg) Country of production: India Height: 10 inches (25.4 cm) Width: 4 inches (10.16 cm) Timer: 2 minutes Like every other hourglass, this 2-minute sand timer has two glass bulbs vertically linked together. The flow of sand is made possible through the thin path between the glass bulbs. The movement of sand from the upper glass to the lower glass takes 2 minutes. When the top bulb becomes empty, the hourglass can be inverted to begin another round of timing. It measures 20.32 cm in height. For antique or brass items enthusiasts, this handmade nautical hourglass is perfect as a collectible gift. To give it an elegant and sleek appearance, it is aesthetically crafted in an American style, with solid shiny brass of premium quality. Its usefulness as a timer can be traced back to the 14th century. Then it was popularly accepted as a reliable tool for measuring time, especially on the sea.