258 A MANUAL FOR NORTHERN WOODSMEN 



BRITISH COLUMBIA LOG SCALE 



Established by the government, and derived from the 

 following rule: Deduct \y% inches from the mean diam- 

 eter of the log at the small end ; square the result and mul- 

 tiply by .7854; deduct %; divide by 12; multiply by the 

 length of the log in feet. 



Logs more than 40 and not over 50 feet long to be scaled 

 as two logs of equal length, the butt log taken as 1 inch 

 larger than the top. Logs over 50 and not over 60 feet 

 long to be treated similarly, but with 2 inches rise allowed 

 to the butt log; and so on, 1 inch of rise being added for 

 each 10 feet or part thereof over 40 feet. 



