crs
Senior Member
I take from your answer, not really answering but instead citing more manuals etc., that you actually never had to find your position anywhere...
BTW, thanks for the instructions but I don't need a military manual to know how to build a sundial...
Look I'm not interested in arguing this at nauseoum with you guys so let's just agree to disagree about the relative precision of each method.
While I know how to find my position with mine...let me ask you one last time clearly and simply...how do you find your current location with your method? ...please humor me...
Bob you are absolutely correct...but I use a slightly more complex compass that has a little ruler and allows to measure angles. That way when the string - with the stone attached to it that I use to make sure the stick is vertical - is placed from the tip of the shadow to the top of the stick I can measure the angle and calculate my latitude. As explained below...and accuracy is guaranteed by drawing a line south to north from the base of the stick so I can get the exact length (and angle) at noon and mark the time of this event, that way I also have my longitude.
When riding in remote areas where points of reference are few and far in between - without a GPS - this method applied daily will let you compare (and confirm) your position to the running fix and insure that you are on course to your destination.
Condescending xxxxxx...
I first learnt and practiced map reading when I was about 12, iirc. Done bushcraft courses inc' nav stuff in the UK when I was older... Not that I've had to do it other then for practice really - and I am no expert - but some practice I have done.
You may be Lawrence of Arabia or Priscilla, Queen of the Desert for all I know - but that doesn't mean I take your word for gospel and ignore the facts...
You keep changing your story - and even what's written in that handbook. One minute you don't need a vertical stick - now you do. The Handbook doesn't say anything about what time of day to do it - but you try say it does...
My method is the method described perfectly clearly in the instruction given in that handbook which I copied and pasted in, FFS... LOOK AT THE DIAGRAM. You were talking about direction first, not location (how did that sneak in?). Remember, you started off with this gem:
No compass, put a stick in the ground, the point where the shadow is shortest points to North when looking from the base of the stick (in the northern hemisphere).
Yes there are other ways, using the sun at solar noon, which you've now started to describe, for calculating coords/location (your compass with protractor has now snuck in too, I see - along with a string and stone to make your stick nice and vertical). But that's not the original subject discussed. Again, it was direction - not location. (I know where you're coming from/going to i.e.. desert nav' but, again, that's changing the subject.)
If you want to say 'your shit and I'm great' again, PM away...
(See Method 4 to know what he's on about: http://www.wikihow.com/Determine-Latitude-and-Longitude Do when you've got no landmarks/features to match up with what's around you and what's on the map.)