Originally Posted by
Kirk Hersee
But, sometimes gravel and similarly rough ground can cause it to be off in measurement.
How far off? What accuracy are you looking for?
Within a 1/4", within a 1/2", within 1", within 1-1/2"?
If you use a tape and measure waist high where it is easy to measure, you may be measuring 'trim to trim' versus measuring the foundation walls themselves, and that could easily change measurements buy 3/4" to 1-1/2" *as each end*, meaning you are only accurate to within 2" to 3" anyway.
I suspect a large wheel will give better accuracy than that.