• 30 Minute Hourglass
• Historical & Practical Value
• Mariners Hourglass
• Black French Finish and Silver Metal
• Weight: 2.47 lbs. (1.12 kg)
• Dimensions: 7.25 x 5 x 10 in. (18.5 x 13 x 25.5 cm)

Collectable because of their combined historical and practical value. Ship’s hourglasses were calibrated to the half hours of the ship’s watch. To appreciate the important symbolism of the hourglass observe, Renaissance painted still lives, also called Vanitas, filled with symbolism and morals. They very often depict hourglasses.