Glossary A
Automatic piano is usually electrically-operated, which has the pedals automatically controlled and which has limited suction-level variations. Examples include the Hupfeld Phonoliszt, the Recordo, and the Seeburg Style X. Many expression pianos have separate automatic controls for bass and treble hammer rails.also called as expression piano.
Auto container is described as a container equipped for the transportation of vehicles.
Aneroid barometer is described as a mechanical barometer used to measure air pressure for warnings of changing weather. A barometer is an instrument used to measure atmospheric pressure, usually measured in inches of mercury or millibars.