tag:blogger.com,1999:blog-2314748820955610427.post1487102827897395941..comments2022-03-27T04:10:10.287-07:00Comments on Lensatic Compass Guide: How to Use a Lensatic Compass, Part IIUnknownnoreply@blogger.comBlogger6125tag:blogger.com,1999:blog-2314748820955610427.post-29688060225118582642010-08-10T08:05:55.401-07:002010-08-10T08:05:55.401-07:00@HikerPilot - very good suggestion, thank you.
@t...@HikerPilot - very good suggestion, thank you.<br /><br />@taj k - you're correct! Typo! Good catch.Ranger Rickhttps://www.blogger.com/profile/06114774084021220399noreply@blogger.comtag:blogger.com,1999:blog-2314748820955610427.post-53346728085082477362009-08-31T20:20:14.069-07:002009-08-31T20:20:14.069-07:00Ranger Rick,
I'm confused; for finding a back...Ranger Rick, <br />I'm confused; for finding a back azimuth with a military lensatic compass, you said to subtract 1600 mils. My question is, doesn't it need to be 3200? Was that a typo or am I missing something? <br />Respectfully,taj khttps://www.blogger.com/profile/08926803493195908321noreply@blogger.comtag:blogger.com,1999:blog-2314748820955610427.post-53434660369761664072009-07-27T23:03:28.579-07:002009-07-27T23:03:28.579-07:00It will be helpful to folks who are really new/try...It will be helpful to folks who are really new/trying to grasp the basics, to add additional instruction on how to actually do what the 5th paragraph says, ("Now, take your map and draw lines...")<br /><br />Perhaps a simple way to introduce the two methods for drawing the lines would be to add the following after the last sentence, "This, in a nutshell. . . ":<br />"To draw the back azimuth lines, which are relative to Magnetic North, you may chose between two methods: 1) Apply the declination (previously explained) to convert from Magnetic Back Azimuth to True Back Azimuth, then lay a protractor on the nearest line on the map running True North or True East-West (you may have to connect points at top and bottom, or sides, of the map to have any such True North or True East lines to measure from). Or, 2) without using math and a protractor, you may align your map to the real world using the Lensatic compass and then set your Magnetic Back Azimuth on the face of the compass and directly draw the back azimuth using the edge of the compass when properly set up. This will be explained in more detail in the next article, "The Lensatic Compass: A Better Protractor".HikerPilothttps://www.blogger.com/profile/11237435875488478546noreply@blogger.comtag:blogger.com,1999:blog-2314748820955610427.post-22644185403797517372009-04-08T15:07:00.000-07:002009-04-08T15:07:00.000-07:00Thanks for the indepth reply :)Just last week i wa...Thanks for the indepth reply :)<BR/>Just last week i was playing around with an army issued prismatic compass and hours later i found a lensatic compass at a shop. Both seemed to have similar "parts" (in lay man terms, i have no idea what they are really called), rotating bezel , pop up cover with vertical line , foldable thingy to view the degrees closely.Marcushttps://www.blogger.com/profile/10921608435358307867noreply@blogger.comtag:blogger.com,1999:blog-2314748820955610427.post-59579173885021828212009-04-02T22:07:00.000-07:002009-04-02T22:07:00.000-07:00Great question. Prismatic compasses are generally...Great question. Prismatic compasses are generally considered to be a specialty item, and accurate to fractions of a degree when hand-held. When tripod-mounted they are even more accurate.<BR/><BR/>That being said, lensatic compasses are divided into 6400 mills, so if you could get 1 mil accuracy you'd be down to about 1/17 of a degree. Practically speaking, though, I don't think 1 mil accuracy is realistic, especially hand-held. Even in the military when they want to lay in artillery batteries from a survey point they use much more accurate, tripod-mounted, survey equipment.<BR/><BR/>So long answer to a short question - from my experience the prismatic hand held compass is slightly more accurate, but not by any useful margin in real conditions.Ranger Rickhttps://www.blogger.com/profile/06114774084021220399noreply@blogger.comtag:blogger.com,1999:blog-2314748820955610427.post-9784514230933898782009-03-31T21:56:00.000-07:002009-03-31T21:56:00.000-07:00Hey there!Are prismatic compasses generally better...Hey there!<BR/>Are prismatic compasses generally better than Lensatic compasses? Or would it be rhetorical to compare since they serve different purposes.Marcushttps://www.blogger.com/profile/10921608435358307867noreply@blogger.com