Originally Posted by Axe McGee
measurements as fine as 21/64ths...? in wood working really?
Only in the mind of the computer
. These dimensions are automatically calculated by the CAD program the designer was using.
I always get a good chuckle every time I review a set of plans for the first time and see 1/64" dimensions
. Since your tape measure in 1/16" increments, anything smaller than this is meaningless, unless you plan on building with an enginer's scale.
It is a pretty big leap of faith to extend an angle measured with a protractor out to half of a 16' truss, so you will need to calculate the height at the centerline of the truss. This can be done with a construction calculator...or makes a good exercise for a family member who is in high school geometry or trig.