102 A MANUAL FOR NORTHERN WOODSMEN 
D. These where they intersect corresponding rays from 
a fix points c and d. Rays also drawn toward E, F , and 
G , but the angles made with the corresponding rays from a 
are so small that these points are not given a good location. 
4. Board taken to C and oriented by A and B. Check 
ray drawn to d. Rays toward E, F, and G, intersecting 
similar rays from a, fix e , /, and g. 
Board at D 
5. Board taken to D and similar process performed for 
a check. E, F, and G may also be checked with one 
another. 
6. Fix other points on the shore such as prominent 
rocks or trees. 
(а) By intersecting rays from any two of the primary 
points in the same manner as these were fixed. 
(б) By drawing a ray from one of the primary points as 
c toward any object as X, setting up at X, using c a; to 
orient by, and then fixing x by a ray brought back in the 
range A a until it cuts c x. 
( c ) By setting up the board on any desired point on the 
shore as Y , oriented by the needle, and ranging back from 
Board at X 
Board at Y 
Board at C 
