From Jammin Software:
WinSketch is a sketching application designed to calculate the square footage and linear footage of user defined areas. Simple to complex areas can be drawn using either the keyboard or mouse. Angles can be entered as either a relative degree of offset from the previous line or as a rise and run value. Arcs are drawn using chord and degree, chord and height, or chord and perimeter values. Using a unique calculation method, exclusive to WinSketch, all area calculations are displayed with Proof Positive Calculations. Additional drawing tools are included for Single Lines, Labels, Free Form Text, Symbols, and the ability to create new symbols on the fly.