he his mate the best on you tube i think. he takes his time to show people how it done and how to do the written test not many people on you tube show people this the training will not like him for this but i have respect for people that go out their way to help people. mate
You are supposed to move your plotter along the course line until the grommet intersects a meridian, then read the course where the meridian intersects the inner scale.
Everything you do on a chart it all true course Than after you plotter your course. You then do the magnetic course And then you do Deviation. Thank you for this Video Alan its a great video When i went to sea school i was showing this. Everything you do on a chart it all true course you do on a chart. The rest done on a piece of paper then you put it into you log. Hope this help other
The reason there are more tic marks on the plotter, is that each side represents different scales. It depends which chart you are using. Sectionals are 1:500,000 and Terminal area charts are 1:250,000. You may also have a wac chart which is on to one million. Use the right scale for the right chart . Now place your protractor base on the course line that you drew, then slide the grommet (the little hole) to a line of longitude. do the degrees make sense now ?
course line is more northsouth, it may not cross any meridians. In this case, place the plotter along your course where it crosses a latitude parallel, and read the true course from the smaller auxiliary scale on the plotter
Buddy, this video has been up for 4 years and several comments must have made you aware you were ignorant of how to use this plotter correctly. Do yourself a favour and delete it as it spreads mis-information as evidence by some comments. FYI - You place the hole (centre of the protractor arc) on your start point, and place the ruler parallel with your course line. You then read both distance and direction at the same time, without having to move the plotter. The correct course is read from where the plotter sits over a line of longitude on the map. Depending on whether you use the longitude line above or below the start point determines which of the 2 figures you use (which are reciprocal to each other …. 180° difference). By not having to move the plotter, and realign it with north, saves time. Notice, just above the “C” of the word "CP-1 PLOTTER”, where the centre of the arc is (and the sight hole) the distance scale goes in both directions. This allows you to read the distance and direction at the same time. If it is further than 87 Nm (WAC scale), then you need to move the ruler to use the longer scale at the bottom. The “Sectional" scale is 1:500,000 scale, for Sectional maps. Here in Australia I assume our equivalent to a Sectional map is a VNC (Visual Navigation Chart) which is 1:500,000 scale. The other side of the plotter is completely Statute miles.
I was able to work out the math, but it just wasn't as easy as I thought it should be. This is precisely the answer I came here to find, although I absolutely had to move the plotter to get the grommet to fall on top of a line of longitude. Thanks!
Thanks for your comment. I, too, came in search of the answer your comment provided regarding how to read the true track (course). One question, though.... After taking the distance measurement, is it best to use a line of longitude nearest the center of the track, or one over so as to read the heading nearer the outside of the protractor, which would then also be nearer the center of the track, the midway point of the flight? I certainly have not asked that in the most articulate way. So, should the center hole of the protractor be near the midway point of the track, or should the outside of the protractor be near the midway point? Or, does either not make any difference? I'm thinking that it does make a difference because it's a great circle rather than a rhumb line.
you seen to know better, why not make q video and share with us your knowledge , we would appreciate it !i asked cuz i m doing my PPL and i will need that kind information soon!!
That's what I thought too at first until I read one of the comments. What you need to do is... First, draw a line connecting your two airports. Then, measure the distance from the center point of the first airport to the center point of second airport, and write that down. Now, place your ruler along that line, your planned course. Place the little hole in the middle where it intersects a meridian (line of longitude) and your planned course. Then, move your eyes straight out to the outside of the protractor and read the heading at that line of longitude. Just follow that line of longitude from the intersection of your course and read the heading that it says at the outside of the protractor. I hope that makes sense. I believe that finding a line of longitude near to the midway point of your course will help give you a truer course heading.
I've come across a couple of these videos by Mr. A. Feller and he does not use the plotter correctly. In each example, he states to just ignore the numbers. This is not true. If he uses the plotter correctly, the course numbers will give you your heading. You always align the top edge with your drawn course line. You center the plotter where your line intersects the line of meridian. If you use meridian of longitude, read the outer scale. If using meridian of latitude, read the shorter inner scale. It is simpler w/ a rotating plotter, but the principle is the same. I don't know why Mr. Feller's videos are still out there, but I highly recommend disregarding his explanation of the plotter's use. He does not understand its proper use, ergo he tells you to ignore what confuses him.
Two comments. First, for people taking their written test for the private, the test supplement charts are NOT to scale. So do not use the plotter to measure distance. Use the scale along the margin of the test chart document. Secondly, this guy is not demonstrating how to use the plotter correctly, see your flight or ground instructor for assistance.
