SELLING LUMBER 417 



inch less over all than the count or measured width of the rough 

 material used in manufacture, and the tongue and lap shall be 

 measured to determine the finished width and face measure 

 shall not be standard. 



36. "Equivalent" means equal, and in construing and ap- 

 plying these rules, the defects allowed, whether specified or 

 not, are understood to be equivalent in damaging effect to those 

 mentioned applying to stock under consideration. 



37. No arbitrary rules for the inspection of lumber can 

 be maintained with satisfaction. The variations from any given 

 rule are numerous and suggested by practical common sense, 

 so nothing more definite than the general features of differ- 

 ent grades should be attempted by rules of inspection. 



38. Inspection of lumber is not an exact science and a 

 reasonable variation of opinion between inspectors should be 

 recognized ; therefore, a variation of not more than 5 per cent 

 upon* reinspection should not disturb the original inspection. 



39. Lumber must be accepted on grade in the form in 

 which it was shipped. Any subsequent change in manufacture 

 or mill work will prohibit an inspection for the adjustment 

 of claims, except with the consent of all parties interested. 



40. The foregoing general observations shall apply to and 

 govern the application of the following specifications. 



DRESSED YELLOW PINE FINISHING. 



Sizes. Finishing shall be dressed to the following: 



1-inch S. 1 S. or 2 S. to 13/16. 



l>4-inch S. 1 S. or 2 S. to 1-1/16. 



1^-inch S. 1 S. or 2 S. to 1-5/16. 



2-inch S. 1 S. or 2 S. to 1% inches. 



These thicknesses also apply when S. 4 S. 



1x4 S. 4 S. shall be 3^ inches wide finished. 



1x5 S. 4 S. shall be 4^ inches wide. 



1x6 shall be S l / 2 inches wide, finished. 



1x7 6 T /2 inches. 



1x87^ inches. 



1x98^ inches. 



1x109^ inches. 



lxll10^ inches. 



1x1211^ inches. 



