An inhaler for delivery of a medicament by inhalation is disclosed. The inhaler comprises a dispensing mechanism, the dispensing mechanism being configured, on actuation, to dispense a dose of medicament, a dose counting mechanism comprising a counter for displaying indicia relating to the number of doses of medicament of the inhaler. The inhaler further comprises a window substantially aligned with the counter such that the indicia are viewable therethrough, wherein the window comprises a magnifying outer surface for magnifying the indicia of the counter, the magnification in a first dimension being greater than the magnification in a second dimension that is substantially perpendicular to the first dimension.
