{"product_id":"vintage-swiss-dennison-u-s-standard-mainspring-gauge-brass-watchmaker-jeweler-tool","title":"Vintage Swiss Dennison U.S. Standard Mainspring Gauge Brass Watchmaker Jeweler Tool","description":"\u003ch1 align=\"center\"\u003e\u003cb\u003e\u003cspan\u003eVintage Swiss Dennison U.S. Standard Mainspring Gauge Brass Watchmaker Jeweler Tool\u003c\/span\u003e\u003c\/b\u003e\u003c\/h1\u003e\n\u003cp class=\"MsoNormal\" align=\"center\"\u003e\u003cb\u003eThis is a genuine vintage horological tool, and it is more interesting than an ordinary measuring gauge\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" align=\"center\"\u003e\u003cb\u003eThe Dennison U.S. Standard mainspring gauge traces back to Aaron Lufkin Dennison, who developed the combined watch gauge around 1840\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" align=\"center\"\u003e\u003cb\u003eThe gauge was designed to measure watch components, including mainspring dimensions; later versions were simplified specifically for mainspring measurement\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" align=\"center\"\u003e\u003cb\u003eUS Standard markings on 1 side and tenths of a mm on the reverse\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" align=\"center\"\u003e\u003cb\u003eMain body of gage is brass and the insert is steel. Overall length about 5 7\/8\" x 1\" wide\u003c\/b\u003e\u003c\/p\u003e\n\u003cp align=\"center\"\u003e\u003cb\u003e\u003cspan\u003eCONDITION\u003c\/span\u003e\u003c\/b\u003e\u003cb\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cstrong\u003eVery Good\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp align=\"center\"\u003e\u003cstrong\u003eNo issues noted\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp align=\"center\"\u003e\u003cstrong\u003eSee all pictures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp align=\"center\"\u003e\u003cb\u003e\u003cspan\u003ePlease contact us with any questions!\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e","brand":"BooksAndTools","offers":[{"title":"Default Title","offer_id":50527665619009,"sku":null,"price":49.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0277\/8107\/0913\/files\/IMG_5398_11b9ef0a-4477-498d-ac0c-a10661fffdd7.jpg?v=1790192463","url":"https:\/\/booksandtools.com\/products\/vintage-swiss-dennison-u-s-standard-mainspring-gauge-brass-watchmaker-jeweler-tool","provider":"BooksAndTools","version":"1.0","type":"link"}