Measuring Timber 



THE CONTENTS OF LOGS, IN BOARD FEET, BY THE DOYLE LOG RULE l 



Contents, according to length of log in feet 



853 



Diameter of 



log small end, 



inside bark 



10 



ii 



16 



18 



Inches Bd.Jt.Bd. ft. Bd.Jt. Bd.Jt. Bd.Jt. Bd.Jt. Bd.Jt. Bd.Jt. Bd.Jt. Bd.Jt. Bd.Jt. Bd.Jt. Bd.Jt. 



4 

 8 



12 



18 



24 

 32 

 40 



60 



2 



5 

 9 

 14 



20 



28 



36 

 4 6 

 56 



68 



2 



5 



10 



16 



22 



31 

 4 



51 

 62 



76 



3 



6 



ii 



17 



25 



34 

 44 

 56 

 69 



83 



3 

 7 



12 

 19 



27 



37 

 48 

 61 



75 



3 

 7 

 13 



20 

 29 



4 



66 

 81 



16 



17 

 18 



19 



20. 



22 



23 



24 



25 



3 

 8 



H 



22 

 31 



43 

 56 



87 

 106 



126 

 148 

 171 



197 

 224 



253 

 283 

 316 

 350 



165 193 220 248 276 303 331 358 386 



I 



3 



6 



9 



13 



18 



24 

 30 

 37 

 45 



54 

 63 

 73 

 8 4 

 96 



2 



4 



7 



ii 



i6 



21 

 28 



35 

 44 

 53 



63 



74 

 86 



98 



81 



95 



72 



84 



98 no 



112 127 



90 99 

 106 116 

 122 135 



108 



127 

 147 



117 

 137 

 159 



155 169 183 



112 128 144 160 176 192 208 



21 ........ 108 126 144 163 181 199 217 235 



121 142 l62 l82 202 223 243 263 



135 158 180 203 226 248 271 293 



150 175 200 225 250 275 300 325 



26. 

 27. 

 28. 

 29. 

 30. 



32. 



33- 

 34- 



35- 



36. 

 37- 

 38. 

 39- 



181 212 242 272 302 333 



198 231 264 298 331 364 



216 252 288 324 360 396 



234 273 312 352 391 430 



253 296 338 380 422 465 



273 319 364 4io 456 501 



294 343 392 441 490 539 



315 368 420 473 526 578 



337 394 450 5o6 562 619 



360 420 480 541 601 661 



363 393 423 



397 430 



432 468 



469 508 



507 549 



547 592 



588 636 



631 683 



675 731 



721 781 



463 

 504 



547 

 591 



638 



686 

 736 

 787 

 841 



634 676 718 760 



683 



735 



844 

 901 



384 448 512 576 640 704 768 832 896 960 



408 476 544 613 681 749 817 885 953 1,021 



433 506 578 650 722 795 867 939 1,011 1,084 



459 536 612 689 766 842 919 995 1,072 1,148 



40 ........ 486 567 648 729 810 891 9721,053 1,134 1,215 



1 To find the number of board feet in a l6-foot log according to the Doyle scale, subtract 4 from the diam- 

 eter (in inches) of the small end of the log. Multiply the remainder by itself. This gives the contents 

 of the log (in board feet). An 8-foot log would have half as many board feet, a 12-foot log three-fourths 

 as many. 





