1. Introduction
2. Data and Sample Selection
3. Global Pitch Angles of Spirals
4. Amplitude of Non-Axisymmetries
5. Spiral Arms Across the Hubble Sequence
6. Pitch Angle as a Function of Radius
7. Spiral Properties as a Function of Bar Strength
8. Pitch Angle and Central Mass Concentration
9. Discussion
10. Summary and Conclusions