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Opera glasses
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<h2 id="see-also">See also</h2> <ul><li><a href="/facts/London_Opera_Glass_Company/X6uVhhR4">London Opera Glass Company</a></li> <li><a href="/facts/Monocular/DglqwGdb">Monocular</a></li> <li><a href="/facts/Spotting_scope/xcgNemII">Spotting scope</a></li> <li><a href="/facts/Opera/eLeXDdsP">Opera</a></li> <li><a href="/facts/Opera_hat/QP2AJfXb">Opera hat</a></li> <li><a href="/facts/Opera_cloak/VFr7AYQ8">Opera cloak</a></li> <li><a href="/facts/Opera_gloves/Tx5fQlbq">Opera gloves</a></li></ul> <h2 id="external-links">External links</h2> Wikimedia Commons has media related to Opera glasses. <ul><li><a href="https://books.google.com/books?id=5ZlAAAAAYAAJ&dq=bibliogroup%3A%22Chambers's%20Encyclopaedia%3A%20A%20Dictionary%20of%20Universal%20Knowledge%22&pg=PP11"><i>Chambers's Encyclopaedia: A Dictionary of Universal Knowledge</i>, Volume 7</a></li> <li><a href="https://web.archive.org/web/20100407020151/http://www.opticaliamuseum.com/binoculars/opera-glasses">The Opticalia Museum Opera Glasses</a></li> <li><a href="https://binoculars-telescopes.com/binoculars/opera-glasses-vs-binoculars/">Opera glasses vs binoculars</a></li> <li><a href="https://books.google.com/books?id=tmxMAAAAMAAJ&dq=opera+history++glass&pg=PT726"><i>The Encyclopedia Americana</i>, Volume 11</a></li> <li><a href="http://www.fineoperaglasses.com/pages/The-History-of-Opera-Glasses-and-Theater-Binoculars.html/">The History of Opera Glasses</a></li></ul> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>"How to Choose Opera Glasses". Archived from the original on 8 May 2016. Retrieved 24 April 2016. <a href="https://web.archive.org/web/20160508185859/http://binoscopes.org/consumer/opera-glasses.html" target="_blank">https://web.archive.org/web/20160508185859/http://binoscopes.org/consumer/opera-glasses.html</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>"Pocoscope folding opera glasses". <a href="https://museum.aco.org.au/archive/2979-pocoscope-folding-opera-glasses" target="_blank">https://museum.aco.org.au/archive/2979-pocoscope-folding-opera-glasses</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> </ol>