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Rifles, Reloading, Optics, Equipment
Equipment Discussions
Ian, I need your help, please?
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<blockquote data-quote="Scol" data-source="post: 45775" data-attributes="member: 2571"><p>Hi Warren. This may be a bit late for your trip but others may find this useful. The data below can be used to find the horizontal distance to the target from the incline angle and slope (measured) distance.</p><p></p><p>0 deg (horiz.), multiply slope distance by 1</p><p>5 deg, multiply slope distance by 1</p><p>10 deg, multiply slope distance by 0.98</p><p>15 deg, multiply slope distance by 0.97</p><p>20 deg, multiply slope distance by 0.94</p><p>25 deg, multiply slope distance by 0.91</p><p>30 deg, multiply slope distance by 0.87</p><p>35 deg, multiply slope distance by 0.82</p><p>40 deg, multiply slope distance by 0.77</p><p>45 deg, multiply slope distance by 0.71</p><p>50 deg, multiply slope distance by 0.64</p><p>55 deg, multiply slope distance by 0.57</p><p>60 deg, multiply slope distance by 0.5</p><p></p><p>A useful instrument for measuring angles is a clinometer. Some of the Silva compasses have these built in, while Brunton makes one called the CM Clinomaster and Suunto also makes a good one called the PM-5/360 PC. The used Suunto ones sell on e-bay for about $50.</p><p></p><p>Hope this helps. I was wondering when that engineering degree would come in handy.</p></blockquote><p></p>
[QUOTE="Scol, post: 45775, member: 2571"] Hi Warren. This may be a bit late for your trip but others may find this useful. The data below can be used to find the horizontal distance to the target from the incline angle and slope (measured) distance. 0 deg (horiz.), multiply slope distance by 1 5 deg, multiply slope distance by 1 10 deg, multiply slope distance by 0.98 15 deg, multiply slope distance by 0.97 20 deg, multiply slope distance by 0.94 25 deg, multiply slope distance by 0.91 30 deg, multiply slope distance by 0.87 35 deg, multiply slope distance by 0.82 40 deg, multiply slope distance by 0.77 45 deg, multiply slope distance by 0.71 50 deg, multiply slope distance by 0.64 55 deg, multiply slope distance by 0.57 60 deg, multiply slope distance by 0.5 A useful instrument for measuring angles is a clinometer. Some of the Silva compasses have these built in, while Brunton makes one called the CM Clinomaster and Suunto also makes a good one called the PM-5/360 PC. The used Suunto ones sell on e-bay for about $50. Hope this helps. I was wondering when that engineering degree would come in handy. [/QUOTE]
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