# Early Log Rule

This rule appeared at about the same time as the Doyle log rule and the results of this rule are identical to the Doyle log rule.

- measure the diameter on the small end of the log in inches
- subtract 4 inches from the diameter
- multiply this amount by half of the remainder
- multiply this result by the length of the log in feet
- divide the previous amount by 8
- the result in board feet

##### Example:

- the diameter measured at the small end of the log = 24 inches and the log is 20 feet long
- 24 - 4 = 20
- 20 * 10 = 200
- 200 * 20 = 4000
- 4000 ÷ 8 = 500
- 500 board feet

### An Early Log Rule

#### Calculation

- enter the small end diameter of the log
- the length of the log in feet

#### Result

- the volume of the log in board feet