{"id":37049,"date":"2023-01-13T20:48:43","date_gmt":"2023-01-14T01:48:43","guid":{"rendered":"https:\/\/www.georgeglazer.com\/wpmain\/?post_type=product&p=37049"},"modified":"2023-10-24T17:13:20","modified_gmt":"2023-10-24T21:13:20","slug":"scientific-instrument-hourglass-blue-sandglass","status":"publish","type":"product","link":"https:\/\/www.georgeglazer.com\/wpmain\/product\/scientific-instrument-hourglass-blue-sandglass\/","title":{"rendered":"Scientific, Instrument, Hourglass, Blue Sandglass, 3rd Quarter, 20th Century"},"content":{"rendered":"

The invention of the hourglass is attributed to an 8th-century monk in Chartres, France, with the marine sandglass appearing as early as the 14th century. In earlier examples the bulbs were connected with a material such as putty or a hardened wax, bound in leather, linen or string. From about 1720, the two bulbs were welded together over a brass bead drilled with a hole, often still bound in leather. From around 1760, the glass was blown in one piece (with the sand inserted in the cooled end before sealing it). Ships would use the glasses to measure time at sea on a given navigational course. The invention of clocks and watches largely superseded the practical need for hourglasses.<\/p>\n

Condition: Generally very good overall. with the usual light wear and handling.<\/p>\n

References:<\/p>\n

“Marine Sandglass.”\u00a0Wikipedia. 26 March 2015.\u00a0<\/i>http:\/\/en.wikipedia.org\/wiki\/Marine_sandglass (24 April 2014).<\/p>\n

Pope-Hennessey, John et al.\u00a0The Encyclopedia of Antiques.<\/i>\u00a0New York: Greenwich House, 1982. p. 298.<\/p>\n","protected":false},"excerpt":{"rendered":"

Hourglass (Sandglass)<\/b>
\nAmerican: Mid 20th century
\nPainted wood, tinted blue glass
\n13 inches high; 6.25 inches diameter at ends
\n$800<\/p>\n

Available for prop rental or purchase; please\u00a0inquire.<\/a><\/p>\n

Hourglass of typical form, of blue painted wood, having three baluster turned supports with gilt highlights on the ring turnings, and with round ends with molded edges on disk feet. The central blue tinted hourglass is comprised two sections joined by a central wooden ring.<\/p>\n

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