PACED SURVEY 
the object is short such a point may be found by estimation, for 
greater distances stand on the base line, stretch the arms along it, and 
(without looking at the object) swing the arms together, if they do 
not point toward the object move along the base line and try again 
till the proper place is found. When a drawing board is used to 
hold the paper, right angles may be found by sighting along its edges 
or a right angle mirror or prism may be used. 
Pacing should be done from the point on line fo the object, as 
the point must be found first and the object is more easily seen from 
a distance. 
Do not locate an object by pacing from one base line along 
another to the right angle point, as this would include any error 
made in the location of the right angle point. Such an error of lo- 
cation would have little effect on a distance at right angles to the 
base line. 
Sometimes objects intervene so that it is not possible to pace 
along a desired line; it is then often possible with a little care to 
offset and pace along a parallel line. 
Gain general control of the problem first, —that is, locate 
boundaries, fences, important roads and the larger objects as other 
buildings, etc., and then fill in the single trees, walks, shrub beds and 
other details. 
Locate everything possible from the original base lines. When 
objects are to be located from other objects be sure that the first 
locations are correct. 
When locating a line at an angle to the base line tie in its ends, 
or if more convenient some point in the prolongation of the line. 
A row of trees may be plotted by locating the end ones and pacing 
along the line to locate intervening ones. 
Locate curves by right angle ties from the base lines to as 
many points as desired. Avoid unnecessary walking. Often in 
pacing a distance intermediate objects, as road edges, etc. will be 
passed; if so, make notes of the distances to such objects and later 
plot them. 
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