COMPASS AND PACING 
97 
as a rule to allow a pedometer to be employed. Some 
men register double paces. Others count up to a hundred 
in the head and take down the hundreds on a “clicker,” 
m a note book, or by breaking an elbow in a tough twig 
carried in the teeth or hand. 
Accuracy. With all its limitations, pacing is a very ser¬ 
viceable means of measurement and a man who has duly 
trained himself can get very good results. Johnsons 
“ Surveying ” says, that when a man’s gait has been stand¬ 
ardized and on the work he walks at a constant rate, “ dis¬ 
tances can be determined by pedometer or by counting the 
paces to within 2 per cent of the truth.” That refers, 
without doubt, to open land. In woods work too there 
Pond Surveyed from Section Lines by Cross Bearings and the 
Compass and Pacing Method 
are many men who can be depended on for results as close 
as that, but errors up to 5 per cent in a straight mile on 
uneven land is for the writer the usual standard of work. 
This is not serious. When the error is distributed over the 
mile by plotting, the utmost probable error in the location 
of any point is not over 25 yards. 
Uses of the Method. (1) The staff compass is largely 
used in retracing old lines. Pacing may well be employed 
with it as a means of finding blind marks and corners, for 
this purpose replacing the chain. 
