{"id":5704927,"date":"2025-07-28T11:11:21","date_gmt":"2025-07-28T09:11:21","guid":{"rendered":"https:\/\/www.optics-trade.eu\/blog\/?p=5704927"},"modified":"2025-07-28T11:39:17","modified_gmt":"2025-07-28T09:39:17","slug":"kowa-tsn-66-25-60x66-instruction-manual","status":"publish","type":"post","link":"https:\/\/www.optics-trade.eu\/blog\/kowa-tsn-66-25-60x66-instruction-manual\/","title":{"rendered":"Kowa TSN-66 25-60&#215;66 Instruction Manual"},"content":{"rendered":"<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"767\" height=\"702\" src=\"https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Posnetek-zaslona-2025-07-28-110341.png\" alt=\"\" class=\"wp-image-5705080\" style=\"width:554px;height:auto\" srcset=\"https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Posnetek-zaslona-2025-07-28-110341.png 767w, https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Posnetek-zaslona-2025-07-28-110341-400x366.png 400w\" sizes=\"auto, (max-width: 767px) 100vw, 767px\" \/><\/figure>\n<\/div>\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.optics-trade.eu\/en\/kowa-tsn-66a-25-60x66.html\"><strong>Kowa TSN-66A 25-60&#215;66<\/strong><\/a><\/li>\n\n\n\n<li><strong><a href=\"https:\/\/www.optics-trade.eu\/en\/kowa-tsn-66s-25-60x66.html\" target=\"_blank\" rel=\"noreferrer noopener\">Kowa TSN-66S 25-60&#215;66<\/a><\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">NOMENCLATURE<\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h3 class=\"wp-block-heading\">TSN-66A PROMINAR<\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"642\" height=\"358\" src=\"https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Kow1-1.png\" alt=\"\" class=\"wp-image-5704939\" srcset=\"https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Kow1-1.png 642w, https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Kow1-1-400x223.png 400w\" sizes=\"auto, (max-width: 642px) 100vw, 642px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>Angled Type Straight Type<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Objective lens<\/li>\n\n\n\n<li>Focus Knob<\/li>\n\n\n\n<li>Tripod mount<\/li>\n<\/ol>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h3 class=\"wp-block-heading\">TSN-66S PROMINAR<\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"707\" height=\"350\" src=\"https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Kow2-1.png\" alt=\"\" class=\"wp-image-5704940\" srcset=\"https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Kow2-1.png 707w, https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Kow2-1-400x198.png 400w\" sizes=\"auto, (max-width: 707px) 100vw, 707px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>Straight Type<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Objective lens<\/li>\n\n\n\n<li>Focus Knob<\/li>\n\n\n\n<li>Tripod mount<\/li>\n\n\n\n<li>Release button<\/li>\n\n\n\n<li>Accessory collar<\/li>\n\n\n\n<li>Eyepiece<\/li>\n<\/ol>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">MAIN BODY SPECIFICATIONS<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\" style=\"border-width:1px\"><tbody><tr><td><\/td><td><strong>TSN-66A<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>TSN-66S<\/strong><\/td><\/tr><tr><td>Objective Lens Effective Diameter:<\/td><td>66mm<\/td><td class=\"has-text-align-center\" data-align=\"center\">66mm<\/td><\/tr><tr><td>Objective Lens Material:<\/td><td>Fluorite crystal<\/td><td class=\"has-text-align-center\" data-align=\"center\">Fluorite crystal<\/td><\/tr><tr><td>Minimum Focusing Distance:<\/td><td>3.5m<\/td><td class=\"has-text-align-center\" data-align=\"center\">3.5m<\/td><\/tr><tr><td>Length:<\/td><td>310mm<\/td><td class=\"has-text-align-center\" data-align=\"center\">295mm<\/td><\/tr><tr><td>Weight:<\/td><td>1135g<\/td><td class=\"has-text-align-center\" data-align=\"center\">1155mm<\/td><\/tr><tr><td>Filter thread:<\/td><td>72mm<\/td><td class=\"has-text-align-center\" data-align=\"center\">72mm<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h2 class=\"wp-block-heading\">INSERTING EYEPIECE<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"427\" height=\"355\" src=\"https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Kow3-2.png\" alt=\"\" class=\"wp-image-5704944\" srcset=\"https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Kow3-2.png 427w, https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Kow3-2-400x333.png 400w\" sizes=\"auto, (max-width: 427px) 100vw, 427px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Align the red dot on the eyepiece and the red dot on the spotting scope bayonet mount.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h2 class=\"wp-block-heading\"><\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"420\" height=\"355\" src=\"https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Kow4-2.png\" alt=\"\" class=\"wp-image-5704945\" srcset=\"https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Kow4-2.png 420w, https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Kow4-2-400x338.png 400w\" sizes=\"auto, (max-width: 420px) 100vw, 420px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Insert the eyepiece and twist clockwise until the eyepiece clicks in to the locked position.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h2 class=\"wp-block-heading\">REMOVING EYEPIECE<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"413\" height=\"354\" src=\"https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Kow5-1.png\" alt=\"\" class=\"wp-image-5704946\" srcset=\"https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Kow5-1.png 413w, https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Kow5-1-400x343.png 400w\" sizes=\"auto, (max-width: 413px) 100vw, 413px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Press and hold in the quick release button and turn the eyepiece anti-clockwise until it is released from the scope body.<\/p>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">FUNCTIONS &amp; USE<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">SLIDING HOOD WITH ALIGNMENT SITE<\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"401\" height=\"270\" src=\"https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Kow6-1.png\" alt=\"\" class=\"wp-image-5704947\"\/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Slide the hood away from the body to protect the lens from exposure to rain or to keep direct sunlight from entering the spotting scope. When the object you wish to view is difficult to find, the sight built into the lens hood can be used to find the object.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">TRIPOD SCREW<\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"406\" height=\"262\" src=\"https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Kow7-1.png\" alt=\"\" class=\"wp-image-5704948\" srcset=\"https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Kow7-1.png 406w, https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Kow7-1-400x258.png 400w\" sizes=\"auto, (max-width: 406px) 100vw, 406px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The tripod mount has a removable screw that allows the spotting scope to be attached to either 1\/4 and 3\/8 inch tripod heads. With the tripod screw inserted the mount can be used on 1\/4 inch tripods. Removing the screw allows the scope to be attached to 3\/8 inch tripods.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">FILTER THREAD<\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"421\" height=\"272\" src=\"https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Kow8-1.png\" alt=\"\" class=\"wp-image-5704949\" srcset=\"https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Kow8-1.png 421w, https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Kow8-1-400x258.png 400w\" sizes=\"auto, (max-width: 421px) 100vw, 421px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The filter threads in front of the objective lens allow various types of filters to be attached to the spotting scope.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">FOCUS KNOB<\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"415\" height=\"267\" src=\"https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Kow9-1.png\" alt=\"\" class=\"wp-image-5704950\" srcset=\"https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Kow9-1.png 415w, https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Kow9-1-400x257.png 400w\" sizes=\"auto, (max-width: 415px) 100vw, 415px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The focus knob of the spotting scope has a two-step mechanism; one for fine focusing and one for quick focusing. This system allows a smooth transition from quick focusing to fine adjustment.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">FOCUSSING<\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"410\" height=\"268\" src=\"https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Kow10-1.png\" alt=\"\" class=\"wp-image-5704951\" srcset=\"https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Kow10-1.png 410w, https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Kow10-1-400x261.png 400w\" sizes=\"auto, (max-width: 410px) 100vw, 410px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">When the object is substantially out of focus, use the quick focus knob, to bring the object into focus 3 times faster than when using the fine focus knob. The quick focus knob can focus from 6m to infinity in only two revolutions. The fine focus is convenient for fine focusing and slight adjustments.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Do not turn the focus knob beyond its turning range, as it will damage thefocusing mechanism.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">ACCESSORY MOUNT<\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"404\" height=\"268\" src=\"https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Kow11-1.png\" alt=\"\" class=\"wp-image-5704952\" srcset=\"https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Kow11-1.png 404w, https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Kow11-1-400x265.png 400w\" sizes=\"auto, (max-width: 404px) 100vw, 404px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">HANDLING PROCEDURES AND PRECAUTIONS<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">PROTECTING AND CLEANING THE LENS:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>PROTECTING AND CLEANING THE LENS:<\/strong><br>Use a blower, compressed air, or a soft hairbrush to remove dust or other substances. Gently clean the lens with a light circular motion with an optics cleaning cloth, gauze or cleaning paper (available from your  specialist dealer).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>ATTENTION:<\/strong><br>Commercial lens cleaners can leave a film on the lens surface. Use only the smallest possible amounts<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>CLEANING THE SPOTTING SCOPE<\/strong><br>Use a blower to remove dust and dirt and wipe with a clean, soft cloth. Do not use organic solvents. . Such substances can dis-colour the surface and possibly even deform it. Use a soft brush to gently remove dirt and debris from the focus wheel, the sun-visor, and others moving parts.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>STORING THE SPOTTING SCOPE<\/strong><br>Storing a spotting scope without first cleaning it can lead to stains on the surface and the formation of mold. It is particularly important to clean after use in dusty, damp conditions, or after use in or out of the rain near to the coast. After cleaning the spotting scope, dry it thoroughly indoors at room temperature. Remove the lens cap to store the spotting scope in a dry place. When storing for long periods of time, place the spotting scope in an airtight container with desiccant.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Warranty and repair<\/strong><br>If there is a need to return your spotting scope to the manufacturer for repair or maintenance, please contact your Kowa dealer.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><img loading=\"lazy\" decoding=\"async\" width=\"35\" height=\"38\" class=\"wp-image-5704955\" style=\"width: 35px;\" src=\"https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Kow12-1.png\" alt=\"\">WARNING<img loading=\"lazy\" decoding=\"async\" width=\"35\" height=\"38\" class=\"wp-image-5704954\" style=\"width: 35px;\" src=\"https:\/\/www.optics-trade.eu\/blog\/wp-content\/uploads\/2025\/07\/Kow12.png\" alt=\"\"><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Never look directly at the sun or other strong light sources with your spotting scope. This can lead to serious eye damage or even loss of vision. Keep small parts such as packaging materials, eyepiece covers, etc. away from small children. If these items are swallowed, serious injury, asphyxiation, or even death can result. Do not attempt to disassemble, repair, or modify the spotting scope. In this case the guarantee is void and it may also lead to injures. Do not place the spotting scope in an unstable place. If it falls or tips, injury or damage could result.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Do not leave the spotting scope in the car or near a heat source. This can cause damage to the spotting scope or even cause a fire. Regularly check the condition of the accessories such as the bag, shoulder strap or protective cover, as wear can occur after a prolonged time span. Prolonged contact with rubber parts can cause inflammation or irritation of the skin. Should this occur please consult a doctor. When using the spotting scope in an urban environment, please make sure that you do not disturb the privacy of others. Kowa is not responsible for damage caused by improper handling and or natural disasters such as fire, earthquake, Floods etc. Kowa is not responsible for damage caused by an unauthorized repair shop.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>NOMENCLATURE TSN-66A PROMINAR Angled Type Straight Type TSN-66S PROMINAR Straight Type MAIN BODY SPECIFICATIONS TSN-66A TSN-66S Objective Lens Effective Diameter: 66mm 66mm Objective Lens Material: Fluorite crystal Fluorite crystal Minimum Focusing Distance: 3.5m 3.5m Length: 310mm 295mm Weight: 1135g 1155mm Filter thread: 72mm 72mm INSERTING EYEPIECE Align the red dot on the eyepiece and the&hellip;&nbsp;<a href=\"https:\/\/www.optics-trade.eu\/blog\/kowa-tsn-66-25-60x66-instruction-manual\/\" rel=\"bookmark\">Read More &raquo;<span class=\"screen-reader-text\">Kowa TSN-66 25-60&#215;66 Instruction Manual<\/span><\/a><\/p>\n","protected":false},"author":32,"featured_media":5705080,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","neve_meta_reading_time":"","footnotes":""},"categories":[763,8006],"tags":[],"class_list":["post-5704927","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-instruction-manuals","category-spotting-scopes-instruction-manuals"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - 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