Builders level
Lazer level Building concrete forms
3-4-5 method
Building layout
Batter boards
Batter boards are temporary wooden frameworks used to suspend the layout strings for a foundation. Once erected, the batter boards resemble hurdles. Their placement is crucial to building a foundation exactly as the plans specify, and certain elements of their construction must be exact. Properly installed batter boards help ensure the corners of the foundation are at exactly the right angles and locations.
Reading an architect scale
Isometric drawing
Perspective view