LOG SCALING. 39 



FOREST SERVICE SCALING DIRECTIONS. 



Unless timber is sold on the basis of an estimate, it must be 

 scaled, counted, or measured before it is removed from the cutting 

 area, or from the place agreed upon for the scaling, counting, or 

 measuring. 



All saw timber will be scaled by the Scribner " Decimal C" log 

 rule. This rule drops the units and gives the contents of a log to 

 the nearest ten. When the total scale of a log is desired, all that 

 is necessary is to add one cipher to the sum of the numbers read 

 from the scale stick, excepting the contents of 6 and 8 foot logs, 

 6 and 7 inches in diameter. These are given as 0.5, which multi- 

 plied by 10 gives 5 feet as the actual contents. 



In the absence of a scale stick, or where the position of logs in 

 the pile makes its use difficult, the diameters and lengths may be 

 till lied and the contents figured from a scale table later. 



Purchasers should be required to skid logs for scaling if the cost 

 of scaling will be materially decreased by these requirements and 

 if the cost of logging will not be greatly increased. 



The Forest officer should always insist on having one end of 

 piles or skid ways even, so that ends of logs may be easily reached. 



When necessary and possible, the purchaser will be required to 

 mark top ends of logs to avoid question when they are scaled in the 

 pile. 



Each log scaled must be numbered with crayon. The number 

 will be the same as that opposite which the scale of the log is 

 recorded in the scale book. 



The logs in all skidways must be counted and the number in 

 each checked with the entries in the scale book. 



Each merchantable log after scaling will be stamped " U. S." on 

 at least one end. Logs so defective as to be unmerchantable will 

 not be stamped, but will be marked "cull." 



On all National Forests except those in Alaska and on the west 

 slope of the Cascade Mountains in Washington and Oregon logs 

 over 16 feet long will be scaled as two or more logs, if possible in 

 Ifiiujths not less llian 12 |V<>| . 



The following table shows how the lengths will be divided when 

 scaling logs 18 to 60 feet long. The number of inches to be added 



