Dose display for injection device

The invention relates to injection devices of the kind by which set doses are apportioned from a cartridge containing a volume of medicine sufficient for several doses. Such devices are often designated as "pens" and may be designed as a pen to be carried by a clip in a pocket the same way as a fountain pen. However, the injection devices need not necessarily have a circular cross section but may have an elongated tubular shape with a more or less rectangular cross section. More specifically the invention relates to a display for such an injection device. A dose display for a medicine administration device in which rotation of a dose setting actuator () is transmitted to a display means comprises a flexible disc () carrying numbers in a band along its perimeter, which numbers are in accordance with the set dose presented in a window in a wall of the device to show said dose. During its rotation the disc () is deflected to follow an inner contour of the device to attain a cylindrical shape having a generatrix extending in the axial direction of the injection device and perpendicular to the axis of rotation of the disc.