STANDARD MEASURE. 31 



The Spaulding Rule. 



The Spaulding is the statute rule of California, adopted by an 

 act of the legislature in 1878. It is used also in Oregon, Washing- 

 ton, Utah, and Nevada. It was computed from carefully drawn 

 diagrams of logs from 10 to 96 inches in diameter at the small end. 

 Mill men seem to be well satisfied with its results. It is very 

 similar to the Scribner Rule. 



The Maine Rule. 



The Maine Rule, which is also known as the Holland Rule, the 

 Bangor Rule, and Fabian's Rule, is used only in northern New 

 England, chiefly in Maine, where it has long been the principal 

 log scale. It was prepared from diagrams representing the small 

 ends of logs of all diameters from 6 to 48 inches. The inscribed 

 square of the logs was first determined, and the contents of the 

 logs were then computed by allowing 1 inch for each board and 

 one-fourth of an inch between the boards for saw kerf. The boards 

 outside the square were reckoned, if not less than 6 inches in width; 

 otherwise the whole slab was disregarded. In practice, logs over 

 32 feet long are reckoned as two logs, the sealer measuring the 

 diameter of the top log at the small end and estimating the top 

 diameter of the lower log. 



This rule, like all the rules commonly used, was devised for 

 short logs and not for long ones, to which it is now frequently 

 applied. Mill men very generally agree that the Maine Rule is 

 fairly satisfactory for short logs, and in fact it probably comes 

 nearer to satisfying the present milling requirements, where long 

 logs are exceptional, than any of the other rules in common use. 



STANDARD MEASURE. 



The unit of standard measure is the merchantable contents of a 

 log of a fixed diameter and length agreed upon as the standard log. 

 The contents of logs of other diameters and lengths are determined 

 by reference to, and in terms of, the standard log. A table of 

 standards is based on the principle that the contents of logs vary 

 directly as their lengths and as the squares of their respective 

 diameters. To obtain the volume of any given log in terms of a 

 specified standard, square the diameter of the log at the small end 



