Amedicament delivery device for delivering metered doses of medicament, wherein an indicator mechanism (128, 132) is operably connected to andrive member (118) and arranged to visibly indicate to a user of the device when aspring force tensioning member (166) has been operated such that the device is ready for dose delivery.用於輸送計量之劑量藥物的藥物輸送裝置,其中指標機構(128、132)可操作地連接至該驅動構件(118),且被配製成當該彈簧力繃緊構件(166)已被操作以致該裝置準備好供劑量輸送時,可看見地指示給該裝置的使用者。