Loren, You are correct ! Rough lumber is 2x4, finish is 1 3/4 sometimes I even find it 1 5/8 in Vermont 
Laters
 
Dennis Jowell
Scotch Hollow Farm
Newbury, Vermont 

> On Apr 17, 2015, at 11:51 AM, Loren Busch <starwagen@GMAIL.COM> wrote:
> 
> ​RE: "... rather than that newfangled "2 inch
> unfinished size, 1 and 3/4 inch finished size" lumber they use nowadays."
> 
> Not 'new' at all, finished lumber (vs. rough cut) has been measured that
> way for at least 100 years probably longer. a rough cut 2x4 is 2"x4" but
> finished (nice and smooth) is 1 3/4" by 3 3/4".