THE WELDON RANGE-FINDER. 
353 
and proceeds to pace from C to B. The number of paces is recorded, 
and the man putting the loop of measuring twine over the post B, 
measures the distance B to C. This shows whether he has paced cor¬ 
rectly or not. 
The other men are meanwhile taking the same range from nearly the 
same spot, and thus the results are checked. I generally record the 
result somewhat as follows :— 
Sept. 21st. Early morning; rather dark, but clear . 
Time. 
Range. 
Name. 
Com¬ 
menced. 
Ended. 
Total 
mins. 
Paced. 
Mea¬ 
sured. 
Error. 
Br. W. ... 
5.46 
5.48| 
2i 
2025 
1990 
+ 35 
A.-B. C. ... 
5.48 
5.50 
2 
1970 
1960 
+ 10 
Corp. E.... 
5.52 
5.53| 
If 
1980 
1965 
4 - 15 
The time entered does not include subsequent measurement, only the 
pacing. 
Next, the men are worked double-handed. I record their work 
thus— 
Sept. 27th. Commenced 5.30 a.m. Very dull and dark . 
Object: Man riding at a walk. 
Name. 
Position. 
Time. 
Range. 
Com¬ 
menced. 
Ended. 
Total 
mins. 
Paced. 
Mea¬ 
sured. 
Br. H. 
Z 
5- 5.50 
6.501 
I* 
1260 
1280 
Br. K. 
JB 
) 
Man halted by signal. 
Tested by — 
Br. W. ... 
) 
> 1260 
1290 
Br. C. 
... 
) 
Real range ascertained to be .. 
1297 
* Time of moving objects taken only till signal “ correct ” is given, 
and does not include pacing. 
When well advanced towards correctness the men are taught to use 
the auxiliary base glass. Here so small a distance as an inch is of 
importance, and great accuracy is required. It is therefore not worth 
using until men are well trained. Its work should be simultaneous 
with the other range-finders. 
The auxiliary base-finder man gives the angle-finder man the end of 
