A panel instrument, often as simple as a tiny ball in a vertical
tube, indicating subtle pitch movements of an aircraft. Most
commonly found in sailplanes, where small changes in rate of climb
and descent can greatly affect ones flight.
"This agreement is a good down payment toward ending
the growing inequities that exist between airline passengers and
corporate jet users."
Source: Jay Rockefeller (D-WV), chairman of the
Senate Commerce Committee. On Friday, the Senate Finance and
Commerce Committees reached agreement on a common bill to fund the
Federal Aviation Administration for the next four years... putting
an end to seven months of bureaucratic stalling on the measure.