Mass measurement device

A mass measurement device comprising:

• a force sensor, which has a fixed end and a free end, and outputs a sensing signal in accordance with a magnitude of a force in a sensitivity direction;
• a suction channel configured to pass suctioned air through the suction channel;
• a base part to which the fixed end is fixed;
• an article-holding part fixed to the free end, one end of the suction channel being connected to the article-holding part, and the article-holding part being configured to hold an article due to the suctioned air;
• and
• a computation unit configured to compute a mass of the article based on the sensing signal;
• wherein the force sensor and the suction channel are disposed so that an x-axis directional component of a force exerted on the article-holding part by the suction channel is the smallest among the x-axis directional component, a y-axis directional component, and a z-axis directional component, where the sensitivity direction is an x-axis direction, a direction orthogonal to the x-axis direction is a y-axis direction, and a direction orthogonal to both the x-axis direction and the y-axis direction is a z-axis direction.