A metering device for delivering a pharmaceutical fluid, includes a reusable part and a consumable part. The reusable part includes a housing, a control unit, a driving device, and a coupling member driven by an output wheel for transmitting a drive output to a spindle device. The consumable part includes the fluid reservoir and a piston which can be advanced by the spindle device, with the spindle device disposed on the consumable part and having a spindle, and the spindle device coupled by the coupling member to the reusable part. A force sensor disposed on the reusable part is provided for indirect pressure measurement. The metering device is configured such that after partial or complete filling, the spindle device is in the retracted state. The coupling member is axially slidably mounted and the output wheel is supported by the force sensor on a fixed base.
