Prototype 5

Prototype 5 is a plate to place under the front legs. There is also a small strip to put under the back legs. There is also a button to put the display back on.

Prototype 4

Prototype 4 is a plate that can be rolled in one direction, when it's rolled out it's stiff in the other direction. When rolled out, the scale has the shape of a plate. This can be used with both wheelchairs and normal chairs.

Prototype 3

Prototype 2

Prototype 1