A New Timber Scale. A^ 



joints (k) which enables it to be placed in any desired position, 

 so as to bring the two fixed pins on the standard {gg) to coincide 

 with the centers of the targets on being viewed through the eye- 

 piece. Having done this the moveable point (h) is moved into a 

 position so as to be in line with the eyepiece (i) and the point on 

 the tree to which it is to be measured. This done the length of the 

 log to the measured point may be read from the position of the 

 sliding pin on the standard. 



By the use of this instrument a cruiser and one assistant may 

 scale the contents of about 200 trees in a day, and all readings 

 being direct — the log length in feet and the diameter in inches — 

 the danger of error is practically eliminated. 



The chief use of this instrument so far has been to check a 

 cruiser's judgment as to the scaling qualities of the timber on 

 a tract. The scaling of the exact contents of a few hundred trees 

 on each job being the best possible basis for adapting a volume 

 table for use on any particular type of forest. It has also been 

 found most useful in determining the scale of timber cut in 

 trespass where the logs have been already removed and where the 

 tops have been misplaced either during the removal of the logs 

 or by excessive "throw" from the stump in falling, such as al- 

 ways occurs on slopes. In such cases the stumps are carefully 

 measured and the scaling qualities of the trees cut are determined 

 by scaling the taper on the standing timber immediately adjoin- 

 ing the area cut. 



