FINE FOLDING ANTIQUE IVORY SECTOR DRAWING RULE

FINE FOLDING ANTIQUE IVORY SECTOR DRAWING RULE

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A fine folding ivory sector drawing rule

Dimensions

6 inches folded, 12 extended

Circa

19th century

Country of manufacture

UK and Ireland

Categories: Navigational instruments, Drawing Instruments, Engineering antiques, Tools

Description

For sale is an antique ivory rule, 6 inches folded, twelve open, in near-mint condition with extensive scales, including scales even on the edges.  The pin is intact and the only defect is a tiny crack near the hinge which is barely noticable. 

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US Scientique

I have been a scientific instrument collector and dealer for over twenty five years. I have a wide variety of instruments for sale, including globes, orreries, and microscopes. I also have a collection of meteorites for sale. I have a detailed knowledge of the history of many of my instruments and maintain an informational website (www.microscope-antiques.com) open to the public which, although it will include all types instruments, currently concentrates on microscopes. I am a member of the Quekett Microscopical Society and The Microscopical Society of Southern California. I have contributed numerous articles to the Journal of the latter, and have also written articles about orreries published in the Journal 'Rittenhouse,' the American Scientific Instrument Society Journal. Many other additional original articles I have written about microscopes and their history, can be found on my web site at www.microscope-antiques.com/articles.html. I have been a meteorite collector for decades and all of my meteorites are guaranteed to be absolutely authentic.

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