Notching out 2x4's one step --
1-9/16 inch opening by 3-1/2 inches deep

End result! This application can be used in other similar situations

Finding the depth for nail position effectively with no misses

Finding center of hole for workpoint layout. T-Square effect

Finding your quarter points for pipe flange placement

Combination squaring effect for straight line drawing

Press against tread to transfer lines to nearside for nailing

Marking 3 points for centering for base and cap plate fabrication

Transferring lines

Transferring workpoints from farside to nearside

Measuring table-top depth all around for accuracy from top surface

Regular squaring and straight line cuts -- no problem

Notching out stair stringers and easily mark your stair spindles

Measure, mark and square around a flange in one step, no tape needed

Easier when reaching up to square or mark a workpoint

Secondary tongue acts like a handle-like grip for squaring in corners

Handle-like squaring --
Tri-square effect.

Three points of center for column fabrication