GG2-4&6 figure grid references

Question 1

How do you plot a 4 figure grid reference

Answer 1

1.you start in the bottom left corner.
2.you begin working your way up the vertical lines ad stop at the fist one touching your chosen section.Placing it first [45,–]
3.you do the same but with the horizontal lines.[–,67]

Question 2

How do you plot a 6 figure grid reference

Answer 2

1.you do the same as a 4 figure grid reference.
2.you go into that square and draw/imagine 18 lines the same distance apart 9 horizontally 9 vertically you do the same as a 4 figure but with these new grid references placing the horizontal single digit next to the first half of the 4 figure grid reference e.g.45.new single digit horizontal &67.new single digit vertical.