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Classical 1/2-Hour Hourglass

Other Products in Other Products group: Radiometers 
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1/2 Hour Classical: With origins going back more than 1000 years, the Hourglass is a reminder of how the accurate measurement of time was once very difficult.

It is caged within a decorative frame of hand-finished hardwood and is an interesting link to a long gone past.  The hourglass is hand-made by a skilled glassblower - see below for more detail.

Size: 9½" x 5⅛" diameter  (24cm x 13cm diameter)
Weight: typically 2lbs (0.9kgm)

Model HHG
OLD Price: £25.95  (£32.95 incl. packing & carriage*)

Price NOW: £19.95 (£26.95 including packing & carriage*)

       SORRY, THIS MODEL IS NOW SOLD OUT

* Carriage paid to; England, Wales, Scotland (incl. Highlands & Islands), N. Ireland, Isle of Man & the Isles of Scilly.  Please enquire for elsewhere.

 

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More about hourglass history
Early navigators were users of precision hourglass' and Columbus used a half-hour version on his voyages to the New World.  Some European Kings used teams of servants whose sole task was to immediately flip the hourglass each time the sand ran out and, by keeping count of the number of 'flips', could track time more accurately than previously possible.

The Glass Blower's skill
The angle of the sides of each bulb plus the size of the pin-hole connecting the two bulbs are major factors affecting the flow of sand in an hourglass.  Having created two bulbs with the correct shape, the glass blowers then had to create a pin-hole of precisely the right size to correctly regulate the flow of sand.
 


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