Learn how the cervical cap and the diaphragm work, what they look like, and how reliable they are. Take a look at the Hassle Meter.

Discover the diaphragm, the most popular form of protection from its invention in the 19th century until about 1960.

Instructional guide to this birth control method includes diagrams and a photo of the device. Lists its advantages and disadvantages.

Resource for health professionals describes the diaphragm. Learn about types, mechanisms of action, limitations and management of side effects.