The Sinclair SPJ-1 is a 2-axis, 2 button [[Analog Joysticks|analogue joystick ]] originally designed for the Sinclair PC200. The PC200 (PC-8) compatibility is also stated in the official [[Original Arnold V Specs]]. The 2 buttons are likely to be digitial. It can be used on the [[Connector:Analogue joystick (CPC Plus only)|Amstrad PLUS Analog port]].
<gallery caption="SPJ-1 Sinclar Professional Joystick">