A support evaluation device (10) comprising a series of pressure sensors in a stack (16), output means (34a, 34b, 34c) linked to the pressure sensors for indicating signals therefrom, and a power source, the series of pressure sensors including at least first and second pressure sensors within the stack (16), operational across respective first and second pressure bands, each pressure sensor including first and second electrical conductors (18, 20, 24, 28), and an insulator (22, 26, 30) separating the electrical conductors (18, 20, 24, 28), the pressure sensors being adapted to signal whether there is contact between their electrical conductors (18, 20, 24, 28), and the output means (34a, 34b, 34c) being adapted to provide at least one of an audio or visual output corresponding to signals from the pressure sensors, in use indicating the pressure band reached for a patient sat on the device (10), each pressure band corresponding to a predetermined cushion strength for prescribing a cushion to that patient.
