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Standard Sand Timer
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This sand timer is so cool. Flip it over and watch the sand flow upward on one side while it flows downward on the other side. When it is done, just flip it over to start the sand flowing again. It is
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Standard Sand Timer
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This sand timer is so cool. Flip it over and watch the sand flow upward on one side while it flows downward on the other side. When it is done, just flip it over to start the sand flowing again. It is
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Storm Glass
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The "thunder glass", "spout barometer", "storm glass", and "weather glass" are regarded as the oldest barometers in the world. Hand-blown replicas of those are used on clipper ships. It will actually
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Thunder Glass
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The "thunder glass", "spout barometer", "storm glass", and "weather glass" are regarded as the oldest barometers in the world. Hand-blown replicas of those are used on clipper ships. They will actuall
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UP Sand Timer
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This sand timer is so cool. Flip it over and watch the sand flow upward and you can put your logo on the face of sand timer.
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UP Sand Timer
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This sand timer is so cool. Flip it over and watch the sand flow upward and you can put your logo on the face of sand timer.
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Weather Glass
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The "thunder glass", "spout barometer", "storm glass", and "weather glass" are regarded as the oldest barometers in the world. Hand-blown replicas of those are used on clipper ships. They will actuall
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Galileo Thermometer
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It`s a must-have for the desk of any science enthusiast. The Galileo thermometer is based on a thermoscope invented by Galileo Galilei in the early 1600s. The thermometer consists of a sealed glass tu
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Sand Timer
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This sand timer is so cool. Flip it over and watch the sand flow upward on one side while it flows downward on the other side. When it is done, just flip it over to start the sand flowing again. It is
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