~RARE AND FINE GEORGIAN ARTIFICIAL HORIZON~
$1500 USD ( 1200 GBP) postage included
A rare intact Georgian artificial horizon, complete in shaped case c.1800
Dimensions
13 x 11 x 5 cm.
Circa
1800
Maker
unbranded
Country of manufacture
UK and Ireland
Description
Museum quality Georgian era artificial horizon in ovoid mahogany case with mercury filler funnel and bubble level.
3 1/2 inch (8 cm.) diameter brass backed, frosted? glass with red painted edge (some paint loss chips) sitting atop 3 adjustable legs in tripod format with additional screw to act as a stopper once the hollow area is filled with mercury via the pewter funnel.
Ingenious yet somewhat fiddly, it would be a two man job to fill the glass reservoir since this has to be done on it’s edge. Once the reservoir plug is unscrewed from it’s keeper position, it is threaded into the mercury filler hole. The ovoid (elliptical) mahogany case has 6 drilled holes to accommodate all of the simple accessories ( 3 knurled legs, pewter cup, keeper and glass bubble level-1x 3 cm.). The case measures 5 1/2 x 4 1/2 x 2 inches deep (13 x 11 x 5 cm.) with eared hook and a pair of hinges at the rear. Unsigned but of the highest quality and a form that I have never seen in 50 years.
Ask the Dealer
Dealer information
ScientificaOpticae
Scientifica Opticae
Mark Hacking (Scientifica Opticae Inc.) has been an avid collector/dealer for over 40 years. A former Science teacher, he has an innate love for anything natural or mechanical. Specializing in optical (microscopes, telescopes), surveying, medical, weighing and drawing instruments, he is an active participant of the Scientific Instrument Fair in London. Living in Stratford, Ontario, Canada, with his wife and two children; Mark looks forward to meeting as many fellow collectors as possible, and has a worldwide following on eBay (Sciopti). As of Nov. 1/24 my email has changed to either [email protected] or [email protected].
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