{"id":4070,"date":"2024-08-24T22:23:43","date_gmt":"2024-08-25T02:23:43","guid":{"rendered":"https:\/\/glennpaulley.ca\/curling\/?p=4070"},"modified":"2024-09-12T15:24:42","modified_gmt":"2024-09-12T19:24:42","slug":"using-lasers-in-curling-an-update","status":"publish","type":"post","link":"https:\/\/glennpaulley.ca\/curling\/2024\/08\/24\/using-lasers-in-curling-an-update\/","title":{"rendered":"Using lasers in curling &#8211; an update"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"4070\" class=\"elementor elementor-4070\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ee1e164 e-flex e-con-boxed e-con e-parent\" data-id=\"ee1e164\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-f4c0a55 e-con-full e-flex e-con e-child\" data-id=\"f4c0a55\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-913fa59 elementor-widget elementor-widget-text-editor\" data-id=\"913fa59\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>In the five years since John Newhook and I drafted this <a href=\"https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/LasersInCurling-11.pdf\">document<\/a> describing the use of lasers in curling the technology has continued to improve and become more affordable, so it seemed like an update was in order.\u00a0<\/p><p>With many curling clubs moving to LED lighting for their arenas, green light lasers have now become the norm, rather than the exception, and their cost has plummeted. The <a href=\"https:\/\/www.amazon.ca\/gp\/product\/B07L894FVR\/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&amp;th=1\">lasers that I use<\/a> (see below) can now be purchased from Amazon for a mere\u00a0 $38.69 Canadian, a significant drop from five years ago. Even a rechargeable, green laser pointer\u00a0 for presentations can be had for only $16, a long way from the nearly $200 I spent on a red laser pointer when I was in graduate school at the University of Manitoba.<\/p><p>Of course, none of the lasers for sale anywhere are intended for curling, and the majority are intended for one of three use cases:<\/p><ul><li>for use with a firearm, usually a rifle or shotgun;<\/li><li>a laser pointer for presentations;<\/li><li>a toy for pets, typically cats.\u00a0<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ff079a2 e-con-full e-flex e-con e-child\" data-id=\"ff079a2\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-732b360 elementor-widget elementor-widget-image\" data-id=\"732b360\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/LasersInCurling-11.pdf\">\n\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"824\" height=\"1024\" src=\"https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/UsingLasersinCurling-824x1024.jpg\" class=\"attachment-large size-large wp-image-4058\" alt=\"\" srcset=\"https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/UsingLasersinCurling-824x1024.jpg 824w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/UsingLasersinCurling-241x300.jpg 241w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/UsingLasersinCurling-768x955.jpg 768w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/UsingLasersinCurling-1235x1536.jpg 1235w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/UsingLasersinCurling.jpg 1438w\" sizes=\"(max-width: 824px) 100vw, 824px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8e0d9b0 e-flex e-con-boxed e-con e-parent\" data-id=\"8e0d9b0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-29b8e04 e-con-full e-flex e-con e-child\" data-id=\"29b8e04\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-12b4277 elementor-widget elementor-widget-image\" data-id=\"12b4277\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.amazon.ca\/gp\/product\/B00BYSHB6I\/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&#038;psc=1\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1024\" height=\"851\" src=\"https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/StreamlightHelmentMount-1024x851.jpg\" class=\"attachment-large size-large wp-image-4062\" alt=\"\" srcset=\"https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/StreamlightHelmentMount-1024x851.jpg 1024w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/StreamlightHelmentMount-300x249.jpg 300w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/StreamlightHelmentMount-768x638.jpg 768w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/StreamlightHelmentMount-1536x1276.jpg 1536w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/StreamlightHelmentMount-2048x1701.jpg 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-601f626 elementor-widget elementor-widget-text-editor\" data-id=\"601f626\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>My current laser setup consists of these 3 components: a <a href=\"https:\/\/www.amazon.ca\/gp\/product\/B07CNS5QN3\/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&amp;psc=1\">Neewer 3-dial leveling tripod mount;<\/a> a <a href=\"https:\/\/www.amazon.ca\/gp\/product\/B00BYSHB6I\/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&amp;psc=1\">Streamlight flashlight mount for a cycling helmet<\/a>, re-tapped to fit the 3\/8 threads on the tripod mount; and a <a href=\"https:\/\/www.amazon.ca\/gp\/product\/B07L894FVR\/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&amp;th=1\">Strong Tools green laser sight<\/a> with fittings for a rifle mount. All of these are available on Amazon; clicking on each image will take you to the appropriate page on amazon.ca.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-cc8dd34 e-con-full e-flex e-con e-child\" data-id=\"cc8dd34\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-d3ec00e e-con-full e-flex e-con e-child\" data-id=\"d3ec00e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-78da72b elementor-widget elementor-widget-image\" data-id=\"78da72b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.amazon.ca\/gp\/product\/B07CNS5QN3\/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&#038;psc=1\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1024\" height=\"810\" src=\"https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/Neewer3dialTripodMount-1024x810.jpg\" class=\"attachment-large size-large wp-image-4064\" alt=\"\" srcset=\"https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/Neewer3dialTripodMount-1024x810.jpg 1024w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/Neewer3dialTripodMount-300x237.jpg 300w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/Neewer3dialTripodMount-768x607.jpg 768w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/Neewer3dialTripodMount-1536x1214.jpg 1536w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/Neewer3dialTripodMount-2048x1619.jpg 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6432d6f e-con-full e-flex e-con e-child\" data-id=\"6432d6f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a3e55de elementor-widget elementor-widget-image\" data-id=\"a3e55de\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.amazon.ca\/gp\/product\/B07L894FVR\/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&#038;th=1\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"718\" src=\"https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/GreenRifleLaser-1024x718.jpg\" class=\"attachment-large size-large wp-image-4063\" alt=\"\" srcset=\"https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/GreenRifleLaser-1024x718.jpg 1024w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/GreenRifleLaser-300x210.jpg 300w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/GreenRifleLaser-768x538.jpg 768w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/GreenRifleLaser-1536x1077.jpg 1536w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/GreenRifleLaser-2048x1435.jpg 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e60ae31 e-flex e-con-boxed e-con e-parent\" data-id=\"e60ae31\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-cd147ce e-con-full e-flex e-con e-child\" data-id=\"cd147ce\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4d8cb0d elementor-widget elementor-widget-image\" data-id=\"4d8cb0d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"735\" height=\"551\" src=\"https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/LaserAssembly.jpg\" class=\"attachment-large size-large wp-image-4075\" alt=\"\" srcset=\"https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/LaserAssembly.jpg 735w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/LaserAssembly-300x225.jpg 300w\" sizes=\"(max-width: 735px) 100vw, 735px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-200f928 e-con-full e-flex e-con e-child\" data-id=\"200f928\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-828b40a elementor-widget elementor-widget-text-editor\" data-id=\"828b40a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The complete assembly is shown at left. The laser is a Class 3R 532nm green light laser that is easily bright enough for use in curling clubs, even from the far tee line. A disadvantage of this particular model, however, is that the battery life is rather short; green light lasers use a lot of energy, especially at cooler air temperatures. So for this laser I use lithium Energizer CR123 batteries, but the downside is that CR123 lithium batteries are fairly expensive (about $16 each retail, though you can find better deals if you buy in quantity).\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7ac3ee8 e-flex e-con-boxed e-con e-parent\" data-id=\"7ac3ee8\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-3116068 e-con-full e-flex e-con e-child\" data-id=\"3116068\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d9fa64a elementor-widget elementor-widget-text-editor\" data-id=\"d9fa64a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>However, another option now available is to use a laser pen light with a rechargeable battery. This <a href=\"https:\/\/www.amazon.ca\/dp\/B0C76S5B23?ref=ppx_yo2ov_dt_b_fed_asin_title\">green laser penlight<\/a> from Yilemi, also available on Amazon, is relatively inexpensive at just under $25 and features a large BRC 18650 4200 mAh rechargeable lithium battery. The photograph at right shows the penlight with the red battery and its USB-A charger. The penlight is mounted in an easy-to-use <a href=\"https:\/\/www.amazon.ca\/dp\/B07RW6GTB9?psc=1&amp;smid=A187NT87WKQBIU&amp;ref_=chk_typ_imgToDp\">aluminum penlight mount <\/a>which is mounted on a Neewar tripod level base so as to adjust the height of the beam so that it shines in the middle of a stone&#8217;s striking band. An <a href=\"https:\/\/www.amazon.ca\/dp\/B01EI2DHRI?ref=ppx_yo2ov_dt_b_fed_asin_title\">adapter<\/a> is required to convert the 3\/8 inch mount of the tripod base to the 1\/4 inch tripod mount threaded hole on the penlight mount.<\/p><p>This past week I&#8217;ve had an opportunity to try this combination on the ice and <strong>it works really well<\/strong>; the laser is bright and the massive rechargeable battery easily lasts a full two-hour practice.\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fe861de elementor-widget elementor-widget-image\" data-id=\"fe861de\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.amazon.ca\/dp\/B07RW6GTB9?psc=1&#038;smid=A187NT87WKQBIU&#038;ref_=chk_typ_imgToDp\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"923\" src=\"https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/SerounderBracket-1024x923.jpg\" class=\"attachment-large size-large wp-image-4061\" alt=\"\" srcset=\"https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/SerounderBracket-1024x923.jpg 1024w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/SerounderBracket-300x270.jpg 300w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/SerounderBracket-768x692.jpg 768w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/SerounderBracket-1536x1384.jpg 1536w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/SerounderBracket-2048x1845.jpg 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6d8e20c e-con-full e-flex e-con e-child\" data-id=\"6d8e20c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5ad0a60 elementor-widget elementor-widget-image\" data-id=\"5ad0a60\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1024\" src=\"https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/PenlightAssembly_reduced-768x1024.jpg\" class=\"attachment-large size-large wp-image-4079\" alt=\"\" srcset=\"https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/PenlightAssembly_reduced-768x1024.jpg 768w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/PenlightAssembly_reduced-225x300.jpg 225w, https:\/\/glennpaulley.ca\/curling\/wp-content\/uploads\/2024\/08\/PenlightAssembly_reduced.jpg 900w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3f1014d elementor-widget elementor-widget-text-editor\" data-id=\"3f1014d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>One thing to be careful of when purchasing a device intended for presentations is to make sure the laser pointer has a true on\/off switch so that it can be left on unattended; most laser pointers intended for presentations or for use as a toy don&#8217;t have this feature.\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d00229f e-flex e-con-boxed e-con e-parent\" data-id=\"d00229f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-d46e091 e-con-full e-flex e-con e-child\" data-id=\"d46e091\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fa69fe3 elementor-widget elementor-widget-text-editor\" data-id=\"fa69fe3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Finally I mention two other items that may prove useful to coaches and athletes. The first, at right, is a <a href=\"https:\/\/www.amazon.ca\/Neewer-Folding-Aluminum-Compatible-Camcorder\/dp\/B07GF9C2SY\/ref=sr_1_25?gclid=CjwKCAiAzrWOBhBjEiwAq85QZ2LV_-phIPwn724maKeVb-komd3XITSub78aCfqbWgNx-kXhuDC3DRoCiE4QAvD_BwE&amp;hvadid=324883644406&amp;hvdev=c&amp;hvlocphy=9001145&amp;hvnetw=g&amp;hvqmt=e&amp;hvrand=16950135823184606817&amp;hvtargid=kwd-298527039097&amp;hydadcr=7649_10270986&amp;keywords=leveling+tripod+head&amp;qid=1640881384&amp;refinements=p_36%3A12035761011&amp;rnid=12035759011&amp;s=electronics&amp;sr=1-25\">folding Neewar 3\/8 inch mount tripod head<\/a> that can serve equally well as a tripod base. In fact, this base &#8211; alas currently unavailable on Amazon &#8211; has the advantage of having only one degree of freedom for adjustment (up or down) and so is easier to align than a 3-wheel tripod base.\u00a0<\/p><p>The other item of interest is that <a href=\"https:\/\/www.amazon.ca\/dp\/B08LZ2N7BB\/?coliid=I1LZ7IOB2FKYZK&amp;colid=35D6IN0IN6QDB&amp;psc=1&amp;ref_=list_c_wl_lv_ov_lig_dp_it\">blue light lasers<\/a> are also available for sale now on Amazon, for a cost of just over $100. However, while these blue lasers could be of interest to coaches or athletes that are red-green colourblind, they are very powerful lasers (they will etch wood or light a match at a few metres distance) and the battery life is extremely short, with product specifications indicating a life of 2-3 minutes continuous use. It isn&#8217;t clear to me that these blue lasers are class 3R (the maximum power allowable without a special permit for their use in Canada). Moreover, with their very short battery life they are inappropriate for use on the ice in a curling context.\u00a0<\/p><p>A second blue laser option is this <a href=\"https:\/\/www.amazon.ca\/dp\/B0B4J2NXN1?ref=ppx_yo2ov_dt_b_fed_asin_title\">Votatu M4L-B rechargeable blue laser<\/a>, again designed for mounting on a firearm (see photograph at right). The integrated rechargeable battery is unique; however, the laser is not sufficiently bright enough to work well in a curling venue, where bright LED ambient light drowns out the laser from even short distances (top of the house, or 24 feet). The lower power output makes this model quite unsuitable for on-ice coaching.\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-cdb7cfe e-con-full e-flex e-con e-child\" data-id=\"cdb7cfe\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-5b4427f e-con-full e-flex e-con e-child\" data-id=\"5b4427f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-94a5d68 elementor-widget elementor-widget-image\" data-id=\"94a5d68\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a 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