6 Figure Grid References 6 Figure Grid References

6 Figure Grid References

6 Figure Grid References Finding a 6 -figure grid reference A four-figure grid reference will help locate a specific square on the map, sometimes you want to find the location of something more accurately than a whole square. The accuracy of a four-figure GR on a topographical map sheet is 1000 meters. Whereas, a six-figure GR is used which is accurate to 100 meters. A six-figure GR is used to determine a more accurate location within a specific grid square. In order to understand, you must break up the grid square shown on the map into 100 subdivisions (10 in each direction). By creating an imaginary grid inside a grid square, each small easting and northing is numbered 1 to 9(see example of next side).

38 0 9 8 7 6 5 4 3 2 1 37 0 0 21 1 2 3 4 5 6 7 8 9 22 = 214 376 = 211 373

36 A= 136 354 A 35 B B= 122 343 34 12 13 14

6 Figure Grid References Exercise 12 = __ __ __ , __ __ __ 11 = __ __ __ , __ __ __ 10 = __ __ __ , __ __ __ 09 08 41 42 43 44 45

Exercise Answers = 416 104 = 428 112 = 448 119 = 422 092 = 443 087 = 435 100

Using and Making a Romer Refer To Student Handout

References ~https: //en. wikipedia. org/wiki/Romer ~National Defenses, Royal Canadian Army Cadets—Green Star Instructional Guides. ~ https: //education. gov. scot/improvement/practice-exemplars/4 -and-6 -figure-grid-references/