You'd be wrong.
Instead, today's episode is about an innocuous layout tool, a 48" rule.
|One long ruler.|
I have had this rule (actually, I think I have two) for almost 20 years, and I find I use it all the time. I actually used to build golf clubs, and this rule is important for that. It has been a LONG time since I have done that, but this rule still finds use in my shop.
I use it often as a straight edge. It isn't certified flat to a billionth of an inch, but it also doesn't cost $352. I find that it is pleny accurate for woodworking. Indeed, I am using it in the above photo for laying out tapers on my chair legs.
Shockingly, this rule is available from Golfworks for $10.99. You can't beat it.
|Measures to 1/8".|