Sony Flightstick
Overview
 
The PlayStation Analog Joystick (SCPH-1110) is Sony's first analog controller for the PlayStation, and is the precursor to the PlayStation Dual Analog Controller
Dual Analog Controller
The PlayStation Dual Analog Controller was Sony's first attempt at a handheld analog controller for the PlayStation, and the predecessor to the DualShock...

. It is often incorrectly referred to as the "Sony Flightstick" (not to be confused with the Flightstick line of joysticks for PlayStation consoles by third-party peripheral manufacturer Hori).
Announced to the public in August 1995, the Analog Joystick was released to the public in Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

 in early April 1996.
The Analog Joystick used potentiometer technology previously introduced on consoles such as the Vectrex; instead of relying on binary eight-way switches, the controller can detect minute angular changes through the entire range of motion.
 
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