how do i use a Lensatic Marching Compass?
81040
Pictures of a Lensatic Marching Compass\nhttp://www.brasscompass.com/lensaticmarching.htm\n\nA Lensatic Marching Compass is a type of 'sighting compass'\nhttp://www.thecompassstore.com/sighting-compasses.html\nhttp://www.thecompassstore.com/compassfaqs.html\nhttp://www.eyehike.com/pub/Basics%20of%20Wilderness%20Navigation.doc\n\nBasic Guides to Compass Use & Orienteering\nhttp://www.learn-orienteering.org/old/\nhttp://www.us.orienteering.org/\nhttp://www.thecompassstore.com/howtousemapa.html\nhttp://www.ussartf.org/compass_basics.htm\n\nThis site has a section titled "How to Use A Lensatic Sighting Compasses"\nhttp://www.spidercanyon.com/backiss/mapnav3b.html
392612
There's a couple of ways to do it.\nOne way is to make a telescope shape out of your hands and pretend to look through it. Whichever eye you use is your dominant eye.\nAnother way is to stand a few metres away from someone and put your hands up at arm's length. Have both palms facing away from you and lay your fingers on top of each other and do the same with your thumbs. You should have a small hole you can see through.\nLine that hole up with their nose and then bring your hands towards you, so you can always see their nose through the hole.\nGuess what, the eye you bring your hands towards is your dominant eye.\nThe hand you write with does not necessarily have any relation to your dominant eye - I am right handed but my left eye is dominant.
982565
It can't be done with an unmarked straightedge and a compass, but it can be done with a *marked* straightedge and a compass. The latter was doen by Archimedes about 200BC.
380553
When we draw a circle with a compass, we keep the angle between the two legs constant.\n\nA ray from the top most point on the rainbow to our eye makes an angle to the horizontal direction. Theory says this angle is a constant.\n\nImagine the ray as one leg of long compass and the horizontal direction as another leg which points the center. Keeping the angle constant when the compass is rotated an arc is formed. \n\nIf we go high up we can see the whole circle.
86908
The Gnomon;\nPicture at this link.\nhttp://www.rnzih.org.nz/pages/sundial2.htm
828817
I like the Suunto compass.  The KB-14 series compasses have a unique sighting arrangement so that you can shoot a bearing to better than half a degree -- far more accurately than any other compass I have ever seen.  But they are expensive -- they run about $100.
416671
This is a wonderful activity to develop your exploring skills. I am providing some great website resources that I fully endorse. For easy cache sites a simple inexpensive handheld GPS is okay. I prefer a handheld unit that has mapping capabilities. There are more expensive handheld units that even have color screens, barometric altitude, and digital compass. My pick of choice is the Magellan Meridian-Color USA. There are sites from as near as your back yard to clear across the country. This is an activity that the whole family can get involved in for a small initial investment of one or two GPS units and a pair of two-way radios.
409326
I haven't used this, but it looks fairly simple (as opposed to the professional mapping products):\n\nhttp://www.smartdraw.com/specials/geography.asp?type=12195&id=12195\n\nGood luck
684619
Draw a horizontal staight line to be the base of the trapezoid.\nMark a point to be a corner of the trapezoid. Label it A.\nSet your compass to the length of the base.\nMeasure that distance from the first mark and make a second mark on the line. Lable it B\n\nWithout changing the width of the compass, put the point at A and swing an arc above the line. Move the point of the compass to B and swing and arc. Lable the point where the arcs cross C.\n\nDraw the lines AC and BC. You now have an equilateral triangle. The angles are all 60 degress.\n\nSet your compass to the distance of the leg length.\nPut the point at A and swing an arc across AC. Label the intersection D.\nMove the point to B and swing an arc across BC. Label the intersection E.\nDraw the line DE.\nDone.
1157414
Its pretty much the same way u add a music clip (if im not wrong). Im still at the stage where im trying to get the axis to add up and having a hard time. Hope you figure it out .\n\n\n\n♥
799829
Looks like you need to read the documentation on the website.  Is does say that it's all simulation mode for now, so you're not actually controlling the telescope yet.
525579
A parabola has a focal point. At this focal point "on" a Parabolic Reflector Microphone is, well, a microphone. The "dish" gathers sound waves (lots and lots) and directs them toward the focal point where the microphone collects/converts the sounds waves into electrical signals. It's similar to cupping your hand behind your ear to hear someone. Your hand reflects more sound into your ear than just your outer ear alone.\n\nFor the mathematics behind how it all works, see any analytic geometry text and search for focus, parabola. It's actually quite simple yet very effective.
396223
lets assume you are talking about a radio signal just for the example like a lost hiker\ntake a direction reading from each of your coordinates\nlike say from the first your signal comes in best from the west, from point two its south-east, and from point three its north\non your map mark your three coordinates and a line representing the direction of best radio reception\nwhere the three lines converge is the aproximate location of the radio the lost hiker was using\nhope this helps you you understand triangulation better
42250
what do you mean by angle ruler? protractor, or those triangle shaped ones? if u mean protractor, then you have to line up the point to the hole at the bottom middle hole. supposed to be one straight line that goes right or left. if it goes left, i think that you read the top row. if it goes right, the bottom row. hope that helps :)!
30504
I cannot find a a tasco with that name, but all telescopes have a dial, likely black plastic, probably there are 2, on either end of the same shaft, that you rotate, and it causes the eyepiece (the small lens you look thru) to move back and forth.  Try it during the day, and point the scope at a far away object ( at least 1/2 a mile) and try moving the focus knob all the way to both extremes, while carefully looking thru the eyepiece.  At some point, you should get the far away object to focus.
171237
You take one of those compass-like dealios, which are like two sticks joined at a fulcrum. You point one end at the horizon and the other at the object in the sky you are measuring the height of. Then, if angle isn't automatically indicated on your instrument (i.e. you are cheap like me and just use a compass) then you take a protractor to your compass and measure the angle.
554213
If a "true" mechanical (drafting) drawing compass, it should be adjustable. If just a drugstore el'cheepo, You may (if not changing the setting a lot) use a drop of "lock tight" or "white craft glue" on the pivot, both easy to remove when changing the arc.