About this objectPlastic grey rectangular electronic device with 2 dials and four different coloured square light bulbs ('green/ventilation 800cc'/'orange/compression/11/2' - 38mm'; 'red/wrong hand position'; 'white/recording paper'). The device has a clear plastic cover.
A chromed silver tube with flexible body attaches to bottom of device with a light grey cable and silver attachment 'AST 7' is imprinted on silver chromed flexible tube near attachment to electronic device.
