Medicament delivery device

A medicament delivery device comprising:

• a housing arranged to contain a medicament container with a piston for sealing the medicament container and displacing a medicament in the medicament container;
• a medicament delivery mechanism arranged to push the piston to displace the medicament when activated;
• and
• a driving mechanism connected to the medicament delivery mechanism such that when the medicament delivery mechanism is activated, the driving mechanism converts linear motion of the medicament delivery mechanism into torque so as to rotate a rotation member;
• wherein the rotation member is connected to an indicator system comprising an indicator member and a scale;
• wherein the scale is fixed relative to the housing;
• and
• wherein the indicator member is arranged at the rotation member such that rotation of the rotation member causes the indicator member to move along the scale to indicate an amount of the medicament contained in the medicament container.