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Detail of sextant showing the inscription "Stackpole & Brothers, New York"
 

Sextant by Stackpole & Brothers
early 1870s

American mathematical instruments come into their own
The makers of this sextant, William and Robert Stackpole, boasted that they had "made nearly all the sextants required by our Navy." The Stackpole brothers were Irish immigrants who started their business in New York in 1851--a time when Americans were beginning to produce mathematical instruments comparable to those made in Europe. Serial numbers suggest that the Stackpoles had, indeed, manufactured more than 2,000 sextants as well as other instruments for surveying and nautical use.

Notes
William Stackpole (1819-1895)
Robert Stackpole (1823-1873)
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· Irish Immigration

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