Newton's Gravity Glass is a sand-filled hourglass suspended in a liquid-filled glass cylinder.
Measures 3 minutes of time with either blue, yellow, or purple color liquid. A perfect corporate gift!
The Gravity glass is an awesome desk-topper and a question-generating eductional tool. When the cylinder is flipped, the sand within the hourglass moves down while the hourglass itself floats up
Hourglass inside the cylinder is a 3 minute timer
Need a little extra time? Our new 10 Minute Twisted Modern Glass Timer is the perfect addition to your kitchen, classroom or office. Specifications 2.5"D x 6"H black or white...
This unique, beaker design sand timer makes a great gift for the science lover or anyone who likes an unusual hourglass. Give inspiration to your favorite thinker with this modern...
This innovative sand timer makes a unique display of time on a shelf, in a child's bedroom, or just anywhere you have space. Inspire your favorite thinker with this modern...