Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
A. shows the side view along the centerline. This view of the diagram is to scale; the vertical dashed lines indicate where the diagram is broken to allow for the entire device to be shown. B. shows the top view; the dotted line indicates the centerline. Note: this view of the diagram is not to scale.
