{"id":25785,"date":"2024-06-30T04:30:57","date_gmt":"2024-06-30T04:30:57","guid":{"rendered":"https:\/\/crouchrarebooks.com\/browse\/george-vancouvers-sextant\/"},"modified":"2025-03-18T17:43:18","modified_gmt":"2025-03-18T17:43:18","slug":"george-vancouvers-sextant","status":"publish","type":"product","link":"https:\/\/crouchrarebooks.com\/zh-hans\/browse\/george-vancouvers-sextant\/","title":{"rendered":"George Vancouver’s Sextant"},"content":{"rendered":"

14.5 inch radius vernier sextant by Jesse Ramsden, constructed in brass, signed on the lower cross bar Ramsden London, scale divided to 130o direct to arc, vernier inscribed G. Vancouver, braced index arm, index mirror with Maskelyne flap, sighting tube, four shades, secondary mirror on rear-mounted adjusting lever, wooden handle and brass pin feet, lacking secondary mirror and part of sighting tube.<\/p>","protected":false},"excerpt":{"rendered":"By RAMSDEN, Jesse, [c1772].","protected":false},"featured_media":25786,"template":"","meta":[],"product_brand":[413],"product_cat":[4953,2238],"product_tag":[2581,2135,701,3668,2134,3669,921],"product_campaign":[],"class_list":{"0":"post-25785","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-globes-planetaria","7":"product_cat-all-stock","8":"product_cat-surveying-and-navigational-instruments","9":"product_tag-captain-cook","10":"product_tag-instrument","11":"product_tag-navigation","12":"product_tag-ramsden","13":"product_tag-rare-instrument","14":"product_tag-sextant","15":"product_tag-vancouver","16":"subjects-surveying-and-navigational-instruments-2","18":"first","19":"outofstock","20":"sold-individually","21":"purchasable","22":"product-type-simple"},"yoast_head":"\nGeorge Vancouver's Sextant - Daniel Crouch Rare Books<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/crouchrarebooks.com\/browse\/george-vancouvers-sextant\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"George Vancouver's Sextant\" \/>\n<meta property=\"og:description\" content=\"By RAMSDEN, Jesse, [c1772].\" \/>\n<meta property=\"og:url\" content=\"https:\/\/crouchrarebooks.com\/browse\/george-vancouvers-sextant\/\" \/>\n<meta property=\"og:site_name\" content=\"Daniel Crouch Rare Books\" \/>\n<meta property=\"article:modified_time\" content=\"2025-03-18T17:43:18+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/crouchrarebooks.com\/wp-content\/uploads\/2025\/03\/14243_1H.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1969\" \/>\n\t<meta property=\"og:image:height\" content=\"1900\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/crouchrarebooks.com\\\/browse\\\/george-vancouvers-sextant\\\/\",\"url\":\"https:\\\/\\\/crouchrarebooks.com\\\/browse\\\/george-vancouvers-sextant\\\/\",\"name\":\"George Vancouver's Sextant - 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