1. 1. GROUP 3 PROJECT, EDF6284 FALL 2014 DIANA BENITEZ JEFFERSON SOMMERS JONTHAN CASE STEVEN BECK Click here to begin
2. 2. Hello cadets I am SGT North. I will be your guide through this module. Follow me!
3. 3. After this section, you will be able to: Determine how to locate and read a six-digit coordinate on a grid map Determine how to locate and read an eight-digit coordinate on a grid map Section I Determining Grid Coordinates
4. 4. Practice Test
5. 5. Southwest Corner Four Digit Grid Coordinate 1. Read the map from left to right then up. 2. Use your finger to find your grid square. 3. Your finger should be on the southwest corner of grid square 0593. 4. Use the grid reference box in the margin to determine the grid zone identifier. 5. The correct grid coordinate is EG 0593. Move right Move up
6. 6. Southwest Corner Six Digit Grid Coordinate Point A Vertical Scale Horizontal Scale . 1. Place your protractor in the southwest corner of the grid square. 2. Slide the protractor to the right until you bisect the point with the vertical scale. 3. Read the number off of the horizontal scale where the 05 grid line bisects the horizontal scale. This is the third number of your grid coordinate. 4. Next read the number where the point you are trying to find bisects the vertical scale. This is the sixth number of your grid coordinate.
7. 7. Southwest Corner Point A Eight Digit Grid Coordinate . 1. Place your protractor in the southwest corner of the grid square and slide it to the right. 2. Just like in the six digit coordinate you will read the numbers where they intersect with their corresponding scales. 3. In the eight digit grid coordinate you get a more accurate grid coordinate by estimating exactly where the point intersects the scale. Refer to the video if you need assistance. Click the forward arrow to watch the video again, practice or take the test.
8. 8. 1. Determine a six digit grid coordinate for the following location. On your map locate grid square 1582. In that grid square there is an active open pit mine or quarry. What is the six digit grid coordinate to the open pit mine or quarry? Test C. EH 151828 B. EG 158821 A. EG 821158
9. 9. Section I Assessment: Question 1 Results Congratulations! You are correct! Click forward to go to the next question.
10. 10. Section I Assessment: Question 1 Results Sorry you did not answer correctly! Try again!
11. 11. Test 2. Determine a eight digit grid coordinate for the following location. On your map locate grid square 1185. In that grid square is a water tower. What is the eight digit grid coordinate to the water tower? B. EH 85591150 C. EG 11598550 A. EG 11508559
12. 12. Section I Assessment: Question 2 Results Congratulations! You are correct! Click forward to go to the next question.
13. 13. Section I Assessment: Question 2 Results Sorry you did not answer correctly! Try again!
14. 14. 3. Determine a eight digit grid coordinate for the following location. On your map locate grid square 1102. In that grid square there is the Zion Chapel. What is the eight digit grid coordinate to the Zion Chapel? Test C. EH 11310291 B. EG 11500290 A. EH 02311191
15. 15. Section I Assessment: Question 3 Results Congratulations! You are correct! Click forward to go to the next section.
16. 16. Section I Assessment: Question 3 Results Sorry you did not answer correctly! Try again!
17. 17. Tool Box 1. Terrain Features 2. Marginal Information 3. Colors of the Map
18. 18. Section II: Determining Azimuth and Distance After this section, you will be able to: Demonstrate how to measure straight line distance on a topographic map using the scales on that map and procedures for calculating distances that exceed those scales Demonstrate how to measure curved line distance on a topographic map using the scales on that map and procedures for calculating distances that exceed those scales Demonstrate how to determine and measure a magnetic azimuth Demonstrate how to determine, measure, and plot a grid azimuth
19. 19. Step 1: Identify the scale of the map. The map scale is the ratio (1:50,000) of the distance on the map (1 inch) compared to the distance on the ground (usually 50,000 inches). Determining Straight Line Distance
20. 20. Determining Straight Line Distance Step 2: Convert a straight-line map distance to miles, meters, or yards using the map's bar scale. a. Line up the straight edge of a strip of paper with the beginning and ending points on the map. b. Mark on the straight edge of the paper the beginning and ending points.
21. 21. Determining Straight Line Distance Step 3: Match the marks on the paper with the appropriate bar scale to determine the distance. Tips using the Bar Scale: a. Align the right side of measurement to the nearest thousands. b. On the left side, count the hundreds c. Imagine one of the extension blocks into tenths and estimate which tenth the left side is at. Below is an example of how the Bar Scale works.
22. 22. Video: Determining Straight Line Distance Watch the video above for understanding. Once finished, click the forward arrow to continue learning about determining distances and azimuths!
23. 23. Determining Curved Line Distance As in measuring Straight Line Distance: To measure distance along a road, stream, or other curved line, the straight edge of a piece of paper is used. Needed: In order to avoid confusion concerning the point to begin measuring from and the ending point, an eight-digit coordinate should be given for both the starting and ending points. Tip: Please ensure that when you are measuring curved distance that you mark the paper using the same side of the road. For example, if you start your measurement using the right side of the road then you must stay on that side of the road for the entire measurement.
24. 24. Determining Curved Line Distance Step 1: Place a tick mark on the paper and map at the beginning point from which the curved line is to be measured. Step 2: Align the edge of the paper along a straight portion and make a tick mark on both map and paper when the edge of the paper leaves the straight portion of the line being measured. Step 3: Keeping both tick marks together (on paper and map), place the point of the pencil close to the edge of the paper on the tick mark to hold it in place and pivot the paper until another straight portion of the curved line is aligned with the edge of the paper. Step 4: Continue in this manner until the measurement is completed and you have all of your tick marks.
25. 25. Determining Curved Line Distance Step 5: When you have completed measuring the distance, move the paper to the graphic scale to determine the ground distance. The only tick marks you will be measuring the distance between are tick marks between points (a) and (b), or your start and end points. The tick marks in-between are not used.
26. 26. Video: Determining Curved Line Distance Watch the video above for understanding. Once finished, click the forward arrow to continue learning about determining distances and azimuths!
27. 27. Determining Azimuths: What is an Azimuth? Remember: What are the differences between true north, magnetic north, and grid north? (Use the toolkit for assistance if needed) Definition: An azimuth is defined as a horizontal angle measured clockwise from a north base line. This north base line could be true north, magnetic north, or grid north. The azimuth is the most common military method to express direction. When using an azimuth, the point from which the azimuth originates is the center of an imaginary circle. This circle is divided into 360 degrees or 6400 mils.
28. 28. Determining the Grid Azimuth Step 1: Draw a line connecting the two points (A and B). Ensure that the line you draw extends past the ending point. This will help determine your grid azimuth. The line that you draw will intersect a number on the protractor. This is your grid azimuth.
29. 29. Determining the Grid Azimuth Step 2: To obtain an accurate reading with the protractor (to the nearest degree or 10 mils), Place the protractor index line where the azimuth line cuts a north-south grid line, aligning the base line of the protractor directly over the intersection of the azimuth line with the north-south grid line. *Note: The user should be able to determine whether the initial azimuth reading was correct. Step 3: The user should re-read the azimuth between the azimuth and north-south grid line to check the initial azimuth.
30. 30. Determining the Magnetic Azimuth You cannot follow a grid azimuth with a compass; nor can you plot a magnetic azimuth with a protractor. To assist you in making the conversion from magnetic north to grid north and vice versa, a declination diagram is placed on the margin of your map. The angular difference between grid north and magnetic north is called the G-M Angle.
31. 31. Determining the Magnetic Azimuth Example: For this particular map, the G- M Angle is 21 degrees. Simply read the directions in the diagram when you need to convert the angles for that particular map.
32. 32. Video: Determining Grid & Magnetic Azimuths Watch the video above for understanding. Once finished click the forward arrow to close out section II and take the section II assessment!
33. 33. Section II Conclusion: Determining Azimuth and Distance Now that you are able to: Demonstrate how to measure straight line distance on a topographic map using the scales on that map and procedures for calculating distances that exceed those scales Demonstrate how to measure curved line distance on a topographic map using the scales on that map and procedures for calculating distances that exceed those scales Demonstrate how to determine and measure a magnetic azimuth Demonstrate how to determine, measure, and plot a grid azimuth Please click the forward arrow to begin the assessment.
34. 34. Section II Assessment: Question 1 1. What is the grid azimuth from the Violet Prairie Church in grid square EG 0687 to BM 86 in grid square EG 0589? A. 251 degrees B. 332 degrees C. 351 degrees D. 372 degrees You will need your Tenino map and protractor to answer this question Click either arrow to watch the video again
35. 35. Congratulations! You answered this question correctly! Click the forward arrow to go to the next question. Section II Assessment: Question 1 Results
36. 36. Sorry you did not answer correctly! Try again! Section II Assessment: Question 1 Results Click back to answer the question again or click forward to watch the video again.
37. 37. Section II Assessment: Question 2 2. What is the straight line distance in meters from the Violet Prairie Church in grid square EG 0687 to BM 86 in grid square EG 0589? A. 2000 yards B. 2500 meters C. 3500 meters D. 2500 yards You will need your Tenino map and protractor to answer this question Click either arrow to watch the video again
38. 38. Congratulations! You answered this question correctly! Click the forward arrow to go to the next question. Section II Assessment: Question 2 Results
39. 39. Sorry you did not answer correctly! Try again! Section II Assessment: Question 2 Results Click back to answer the question again or click forward to watch the video again.
40. 40. Section II Assessment: Question 3 3. Using the road, what is the curve distance in meters from the intersection at EH15950062 to the railroad intersection at EH 14360095? A. 2300 yards B. 1200 meters C. 2800 meters D. 1800 meters You will need your Tenino map and protractor to answer this question Click either arrow to watch the video again
41. 41. Congratulations! You answered this question correctly and have completed Section II! Click the forward arrow to go to the next section. Section II Assessment: Question 3 Results
42. 42. Sorry you did not answer correctly! Try again! Section II Assessment: Question 3 Results Click back to answer the question again or click forward to watch the video again.
43. 43. After this section, you will be able to: Describe the parts of the lensatic compass Demonstrate how to hold the compass using the center hold technique. Demonstrate how to hold the compass using the compass to cheek technique Section III The Lensatic Compass
44. 44. The lensatic compass has three main sections: Cover Lens Base Compass Parts We are now going to explore each of these main parts in more detail. Click Forward
45. 45. Cover Luminous Sighting Dots aid in night Navigation. The Sighting Wire is used to set a course of movement over the ground and, along with the Lens and Dial, sighting landmarks for an azimuth. Luminous Sighting Dots aid in night navigation The Cover closes to protect the compass and reduce carrying size Luminous Sighting Dots Luminous Sighting Dots Sighting Wire Cover
46. 46. Lens The Lens is a high quality magnifier for reading the dial when positioned about 30 degrees off perpendicular. Sighting Slot LensThe Sighting Slot is used to set a course of movement over the ground and, in conjunction with other parts, determine an azimuth.
47. 47. Base The Bezel has a serrated edge and rotates with a distinct clicking action. Each click moves the indicator on the bezel 3 degrees. The Dial displays direction in reference to Magnetic North. The dial is divided into two scales: Red Ring=degrees. Full dial =360 degrees Distance between red marks = 5 degrees Distance between red numbers = 20 degrees Black Ring =mils Full Dial = 6400 mils Distance between black marks = 20 mils Distance between black numbers = 200 The Thumb Loop locks the compass in the closed position. When opened, it facilitates holding the compass to determine an azimuth. Dial Bezel Thumb Loop
48. 48. 1. The sighting wire is used with the Test c. luminous sighting dots for sighting landmarks for an azimuth heading. b. lens and dial for sighting landmarks for an azimuth heading. a. sighting slot for sighting landmarks for an azimuth heading. d. fixed index line for sighting landmarks for an azimuth heading. Click either arrow to go back through this section
49. 49. Results Congratulations! You are correct! Click forward to go to the next question.
50. 50. Results Sorry you did not answer correctly! Try again! Click back to answer the question again or click forward to go through the section again.
51. 51. 2. This part is a high quality magnifier for reading the dial. Test c. Lens b. Cover a. Sighting Wire d. Thumb Loop Click either arrow to go back through this section
52. 52. Results Congratulations! You are correct! Click forward to go to the next question.
53. 53. Results Sorry you did not answer correctly! Try again! Click back to answer the question again or click forward to go through the section again.
54. 54. 3. The Dials black scale is Test c. In mils and each mil mark equals 5 b. In degrees and each degree mark equals 20 a. In degrees and each degree mark equals 5 d. In mils and each mil mark equals 20 Click either arrow to go back through this section
55. 55. Results Congratulations! You are correct! Click forward to go to the next question.
56. 56. Results Sorry you did not answer correctly! Try again! Click back to answer the question again or click forward to to through the section again.
57. 57. 4. The Dials red scale is? Test c. In mils and each mil mark equals 5 b. In degrees and each degree mark equals 20 a. In degrees and each degree mark equals 5 d. In mils and each mil mark equals 20 Click either arrow to go back through this section
58. 58. Results Congratulations! You are correct! Click forward to go to the next part of the section.
59. 59. Results Sorry you did not answer correctly! Try again! Click back to answer the question again or click forward to go through the section again.
60. 60. Holding a Lensatic Compass There are two methods used to hold a lensatic compass. Those two methods are: 1. The Center-Hold Method 2. The Compass-to-Cheek Method Click the forward button below to view a video demonstration of each holding method.
61. 61. The Center Hold Method The Compass to Cheek Method
62. 62. 1. This technique is used almost exclusively for sighting landmarks, and is the best for taking an accurate azimuth bearing: Test c. Compass-to-Cheek method b. Hand-to-Chest method a. Center-Hold method d. Rear-to-Front-Sight method Click either arrow to watch the video again
63. 63. Results Congratulations! You are correct! Click forward to go to the next question.
64. 64. Results Sorry you did not answer correctly! Try again! Click back to answer the question again or click forward to watch the video again.
65. 65. 2. This technique is less precise, but is faster to use and can be used under all conditions of visibility. Test c. Compass-to-Cheek method b. Hand-to=Chest method a. Center-Hold method d. Rear-to-Front-Sight method Click either arrow to watch the video again
66. 66. Results Congratulations! You are correct! Click the forward arrow below.
67. 67. Results Sorry you did not answer correctly! Try again! Click back to answer the question again or click forward to watch the video again.
68. 68. CONGRATULATIONS! You Have Completed this Module.