{"id":20816,"date":"2022-03-02T01:30:02","date_gmt":"2022-03-02T09:30:02","guid":{"rendered":"https:\/\/www.bobswatches.com\/rolex-blog\/?p=20816"},"modified":"2024-10-24T17:42:22","modified_gmt":"2024-10-25T00:42:22","slug":"cosmograph-daytona-tachymeter-bezel","status":"publish","type":"post","link":"https:\/\/www.bobswatches.com\/rolex-blog\/resources\/cosmograph-daytona-tachymeter-bezel.html","title":{"rendered":"How to Use the Rolex Daytona Tachymeter Bezel"},"content":{"rendered":"\n<p>The <a href=\"https:\/\/www.bobswatches.com\/rolex-daytona-1.html\">Rolex Daytona<\/a> is the world&#8217;s most recognizable luxury chronograph watch, and that recognition stems from a few key design traits such as a pair of chronograph pushers, a trio of subdials, and most importantly, a bezel with a tachymeter scale.<\/p>\n\n\n\n<p>Ever since its introduction in the 1960s, the Daytona has always featured a tachymeter scale on a fixed bezel. It doesn\u2019t matter if the Daytona is in gold, steel, or platinum, or if the bezel is fashioned from Plexiglass, metal, or Cerachrom\u2014the tachymeter bezel is there. The only exceptions to this rule are those extravagant bejeweled Daytona watches that feature precious gems such as diamonds (like on the &#8220;Tiger&#8217;s Eye&#8221; Daytonas) or colorful sapphires (like on the Rainbow Daytonas) on the bezel.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Rolex Daytona - How To Use The Chronograph | Bob&#039;s Watches\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/43O8NBGwRls?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure><\/br>\n\n\n\n<h3 class=\"wp-block-heading\">Daytona Bezel Key Features<\/h3>\n\n\n\n<ul>\n<li><b>Material:<\/b>\u00a0Plexiglas (vintage only), Metal, or Cerachrom<\/li>\n\n\n\n<li><b>Colors\/Metal types:<\/b>\u00a0Black Plexiglas, Black Cerachrom, or Brown Cerachrom; Stainless Steel, Yellow Gold, White Gold, or Everose Gold<\/li>\n\n\n\n<li><b>Structure:<\/b>\u00a0Fixed<\/li>\n\n\n\n<li><b>Scale:<\/b>\u00a0Tachymeter scale<\/li>\n<\/ul>\n\n\n\n<p>Aside from these rare gem-set numbers, if you have a regular-production Rolex Daytona, it will have a tachy bezel. A tachymeter scale can measure speed based on time traveled over a fixed distance or distance traveled over fixed speed, which is ideal for a motorsports-inspired chronograph like the Daytona. Plus, you can use it to measure either kilometers or miles.<\/p>\n\n\n\n<p>If you&#8217;ve ever looked at the Rolex racing bezel and wondered how it works, read on as we guide you on how to use the Cosmograph Daytona Tachymeter bezel.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">The History Of The Daytona Tachymeter Bezel<\/h2>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1180\" height=\"850\" src=\"https:\/\/www.bobswatches.com\/rolex-blog\/wp-content\/uploads\/2018\/01\/Rolex_Daytona_5D3_2644-Edit-2-1.jpg\" alt=\"How to use the Cosmograph Daytona Tachymeter Bezel\" class=\"wp-image-48207\" title=\"How to use the Cosmograph Daytona Tachymeter Bezel\" vspace=\"5\" srcset=\"https:\/\/www.bobswatches.com\/rolex-blog\/wp-content\/uploads\/2018\/01\/Rolex_Daytona_5D3_2644-Edit-2-1.jpg 1180w, https:\/\/www.bobswatches.com\/rolex-blog\/wp-content\/uploads\/2018\/01\/Rolex_Daytona_5D3_2644-Edit-2-1-300x216.jpg 300w, https:\/\/www.bobswatches.com\/rolex-blog\/wp-content\/uploads\/2018\/01\/Rolex_Daytona_5D3_2644-Edit-2-1-768x553.jpg 768w, https:\/\/www.bobswatches.com\/rolex-blog\/wp-content\/uploads\/2018\/01\/Rolex_Daytona_5D3_2644-Edit-2-1-1024x738.jpg 1024w, https:\/\/www.bobswatches.com\/rolex-blog\/wp-content\/uploads\/2018\/01\/Rolex_Daytona_5D3_2644-Edit-2-1-528x380.jpg 528w\" sizes=\"(max-width: 1180px) 100vw, 1180px\" \/><\/figure>\n\n\n\n<p>The <a href=\"https:\/\/www.bobswatches.com\/rolex\/daytona\/history\">Rolex Daytona history<\/a> traces back to 1963 when the company introduced the Cosmograph as their flagship chronograph collection. The company initially toyed with the idea of calling it the Cosmograph Le Mans but quickly settled on Cosmograph Daytona instead. It&#8217;s been rumored that this decision was made to appeal to the American market and to highlight its association with the newly built Daytona Speedway in Florida, but like all ambiguous parts of Rolex&#8217;s story, the company has never officially confirmed this.<\/p>\n\n\n\n<p>Since its release, the Daytona has seen many bezel variations, including stainless steel, yellow gold, and Plexiglas in early references (such as <a href=\"https:\/\/www.bobswatches.com\/rolex-paul-newman-1.html\">vintage &#8220;Paul Newman&#8221; Daytonas<\/a>) and, more recently, aluminum, ceramic, and white gold. The tachymeter bezel\u2019s primary function is to measure average speeds per hour while traveling over a fixed distance. This was a feature initially developed by Rolex in a bid to become the official watch of NASA, hence its original name, &#8220;Cosmograph.&#8221;<\/p>\n\n\n\n<p>Funny enough, the OMEGA Speedmaster (which was in fact, the world\u2019s first chronograph that moved the tachymeter scale from the dial to the bezel) was initially positioned as a motorsports chronograph but since it was selected by NASA as the agency\u2019s official watch, it became known as the Moon watch.<\/p>\n\n\n\n<p>Instead of space, Rolex&#8217;s iconic chronograph found its home among the world of professional driving, where the tachymeter bezel could be used to measure driving speeds. Early references allowed the wearer to measure driving speeds of up to 200 kilometers per hour, while later references were upgraded with a bezel that featured 400 graduations per hour.<\/p>\n\n\n\n<p>Through the years, Rolex has continued to improve upon the <a href=\"https:\/\/www.bobswatches.com\/rolex-blog\/watch-101\/rolex-daytona-movement-guide.html\">movement that powers the Daytona<\/a>, evolving from Valjoux-based manual movements to Zenith &#8220;El Primero&#8221; based automatic movements (Caliber 4030) to finally, entirely in-house made automatic movements (Caliber 4130.) The Caliber 4130\u2019s vertical (instead of lateral) clutch that activates the chronograph hand is what gives modern Daytonas their signature precise starts\/stops and smooth sweeps. The movement also plays a crucial part in the accuracy of the bezel calculations and the Daytona can measure time to within 1\/8 of a second.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Rolex Daytona Functions<\/h2>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1180\" height=\"787\" src=\"https:\/\/www.bobswatches.com\/rolex-blog\/wp-content\/uploads\/2020\/07\/Rolex_Daytona_116506_20JM9116-Edit-1.jpg\" alt=\"Rolex_Daytona\" class=\"wp-image-48069\" vspace=\"5\" srcset=\"https:\/\/www.bobswatches.com\/rolex-blog\/wp-content\/uploads\/2020\/07\/Rolex_Daytona_116506_20JM9116-Edit-1.jpg 1180w, https:\/\/www.bobswatches.com\/rolex-blog\/wp-content\/uploads\/2020\/07\/Rolex_Daytona_116506_20JM9116-Edit-1-300x200.jpg 300w, https:\/\/www.bobswatches.com\/rolex-blog\/wp-content\/uploads\/2020\/07\/Rolex_Daytona_116506_20JM9116-Edit-1-768x512.jpg 768w, https:\/\/www.bobswatches.com\/rolex-blog\/wp-content\/uploads\/2020\/07\/Rolex_Daytona_116506_20JM9116-Edit-1-1024x683.jpg 1024w, https:\/\/www.bobswatches.com\/rolex-blog\/wp-content\/uploads\/2020\/07\/Rolex_Daytona_116506_20JM9116-Edit-1-570x380.jpg 570w\" sizes=\"(max-width: 1180px) 100vw, 1180px\" \/><\/figure>\n\n\n\n<p>The Daytona chronograph dial permits the wearer to measure elapsed time, indicated in hours, minutes, and seconds. On modern Daytona watches powered by Caliber 4130, the 9 o\u2019clock counter displays the elapsed hours, the 3 o\u2019clock counter displays the elapsed minutes, and the center arrow-tipped chronograph hand displays the elapsed seconds via the 60-second scale on the dial periphery.<\/p>\n\n\n\n<p>The Daytona chronograph tachymeter bezel allows the wearer to read average speed over a set distance based on passed time. It can measure speeds up to 400 units, whether in kilometers or miles.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How to use the Daytona Tachymeter Bezel<\/h2>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1180\" height=\"787\" src=\"https:\/\/www.bobswatches.com\/rolex-blog\/wp-content\/uploads\/2021\/02\/Rolex_Daytona_Bobs-Watches-Couples-Lifestyle-Portrait-Session-49-1.jpg\" alt=\"Rolex_Daytona\" class=\"wp-image-46267\" vspace=\"5\" srcset=\"https:\/\/www.bobswatches.com\/rolex-blog\/wp-content\/uploads\/2021\/02\/Rolex_Daytona_Bobs-Watches-Couples-Lifestyle-Portrait-Session-49-1.jpg 1180w, https:\/\/www.bobswatches.com\/rolex-blog\/wp-content\/uploads\/2021\/02\/Rolex_Daytona_Bobs-Watches-Couples-Lifestyle-Portrait-Session-49-1-300x200.jpg 300w, https:\/\/www.bobswatches.com\/rolex-blog\/wp-content\/uploads\/2021\/02\/Rolex_Daytona_Bobs-Watches-Couples-Lifestyle-Portrait-Session-49-1-768x512.jpg 768w, https:\/\/www.bobswatches.com\/rolex-blog\/wp-content\/uploads\/2021\/02\/Rolex_Daytona_Bobs-Watches-Couples-Lifestyle-Portrait-Session-49-1-1024x683.jpg 1024w, https:\/\/www.bobswatches.com\/rolex-blog\/wp-content\/uploads\/2021\/02\/Rolex_Daytona_Bobs-Watches-Couples-Lifestyle-Portrait-Session-49-1-570x380.jpg 570w\" sizes=\"(max-width: 1180px) 100vw, 1180px\" \/><\/figure>\n\n\n\n<p>As previously mentioned, the tachymeter bezel is marketed as a tool for measuring driving speeds. To use the bezel, you will also need to engage the side pushers to access the chronograph functions. The top pusher starts and stops the central chronograph hand while the bottom pusher resets it back to zero.<\/p>\n\n\n\n<ol>\n<li>To begin, unscrew both the top and bottom pushers. These are screwed into the case to maintain the watch&#8217;s water resistance. The top pusher will be used to start and stop the chronograph hand. The bottom pusher will be used to reset the hand.<br><\/li>\n\n\n\n<li>Let&#8217;s say we want to measure the speed of a car going around a one-mile track. Press the top pusher once the car takes off (to activate the chronograph hand) and press it again when the car has crossed the finish line.<br><\/li>\n\n\n\n<li>Check to see where the chronograph hand is pointing to; for instance, if it points to 140 on the tachymeter scale, then the car traveled at 145mph. Of course, if it was a one-kilometer track (instead of a one-mile track), then the car was traveling at 145kph.<br><\/li>\n\n\n\n<li>Press the bottom pusher to reset the chronograph hand back to zero.<\/li>\n<\/ol>\n\n\n\n<p>In 2013, Rolex became the <a href=\"https:\/\/corp.formula1.com\/partners\/rolex\/\">Global Partner and Official Timepiece of Formula 1<\/a>. However, you certainly don\u2019t have to be a Formula 1 driver to take advantage of the tachymeter bezel. And even if you never use this scale, the tachymeter bezel plays a vital role in the overall design of the iconic Rolex Daytona watch.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Rolex Cosmograph Daytona technically made its first appearance in 1963 as the Rolex Cosmograph. \u00a0Equipped with a bezel engraved with a Tachymeter scale, the Cosmograph, or Le Mans, laid the foundation for what would later be known as the Daytona sports watch. \u00a0It wasn\u2019t until after Rolex became the official sponsor of the Daytona Speedway that the Cosmograph appeared with the name \u201cDaytona\u201d on the dial.<\/p>\n","protected":false},"author":80,"featured_media":20817,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"ep_exclude_from_search":false,"footnotes":""},"categories":[1630],"tags":[1809,1770,1957,2132],"ppma_author":[2307],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to Use Rolex Daytona Tachymeter Bezel | Bob&#039;s Watches<\/title>\n<meta name=\"description\" content=\"Learn how to accurately measure speed with your Rolex Daytona&#039;s tachymeter bezel. A comprehensive guide to using this iconic chronograph feature.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.bobswatches.com\/rolex-blog\/resources\/cosmograph-daytona-tachymeter-bezel.html\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Use Rolex Daytona Tachymeter Bezel | Bob&#039;s Watches\" \/>\n<meta property=\"og:description\" content=\"Learn how to accurately measure speed with your Rolex Daytona&#039;s tachymeter bezel. A comprehensive guide to using this iconic chronograph feature.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.bobswatches.com\/rolex-blog\/resources\/cosmograph-daytona-tachymeter-bezel.html\" \/>\n<meta property=\"og:site_name\" content=\"Bob&#039;s Watches\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/bobswatches\" \/>\n<meta property=\"article:published_time\" content=\"2022-03-02T09:30:02+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-10-25T00:42:22+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.bobswatches.com\/rolex-blog\/wp-content\/uploads\/2018\/04\/rolex-daytona-bezel.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"801\" \/>\n\t<meta property=\"og:image:height\" content=\"534\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Bob&#039;s Watches\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@bobswatches\" \/>\n<meta name=\"twitter:site\" content=\"@bobswatches\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Bob&#039;s Watches\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.bobswatches.com\/rolex-blog\/resources\/cosmograph-daytona-tachymeter-bezel.html#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.bobswatches.com\/rolex-blog\/resources\/cosmograph-daytona-tachymeter-bezel.html\"},\"author\":{\"name\":\"Bob's Watches\",\"@id\":\"https:\/\/www.bobswatches.com\/rolex-blog\/#\/schema\/person\/cbbb3e2eb31ec31b7cdbac6ff0895d36\"},\"headline\":\"How to Use the Rolex Daytona Tachymeter Bezel\",\"datePublished\":\"2022-03-02T09:30:02+00:00\",\"dateModified\":\"2024-10-25T00:42:22+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.bobswatches.com\/rolex-blog\/resources\/cosmograph-daytona-tachymeter-bezel.html\"},\"wordCount\":977,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.bobswatches.com\/rolex-blog\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.bobswatches.com\/rolex-blog\/resources\/cosmograph-daytona-tachymeter-bezel.html#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.bobswatches.com\/rolex-blog\/wp-content\/uploads\/2018\/04\/rolex-daytona-bezel.jpg\",\"keywords\":[\"116500\",\"Daytona\",\"Rolex Info\",\"Tachymeter\"],\"articleSection\":[\"Resources\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.bobswatches.com\/rolex-blog\/resources\/cosmograph-daytona-tachymeter-bezel.html#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.bobswatches.com\/rolex-blog\/resources\/cosmograph-daytona-tachymeter-bezel.html\",\"url\":\"https:\/\/www.bobswatches.com\/rolex-blog\/resources\/cosmograph-daytona-tachymeter-bezel.html\",\"name\":\"How to Use Rolex Daytona Tachymeter Bezel | Bob's Watches\",\"isPartOf\":{\"@id\":\"https:\/\/www.bobswatches.com\/rolex-blog\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.bobswatches.com\/rolex-blog\/resources\/cosmograph-daytona-tachymeter-bezel.html#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.bobswatches.com\/rolex-blog\/resources\/cosmograph-daytona-tachymeter-bezel.html#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.bobswatches.com\/rolex-blog\/wp-content\/uploads\/2018\/04\/rolex-daytona-bezel.jpg\",\"datePublished\":\"2022-03-02T09:30:02+00:00\",\"dateModified\":\"2024-10-25T00:42:22+00:00\",\"description\":\"Learn how to accurately measure speed with your Rolex Daytona's tachymeter bezel. 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