Module system

A module system comprising:

• a first module in which a first guide device is incorporated and a second module in which a second guide device is incorporated, the first module and the second module being positioned along a guide direction, the module system further comprising:
• a first positioning portion configured to position the first module and the second module in such a manner that a gap between an end portion of the first guide device on a second module side and an end portion of the second guide device on a first module side is a predetermined distance;
• and
• a second positioning portion configured to position the first module and the second module in such a manner that a shift between an axial direction of the first guide device and an axial direction of the second guide device in a direction orthogonal to the guide direction in a plan view is equal to or less than a predetermined amount of shift,
• wherein the first positioning portion comprises:
• a first pin provided on the first module and protruding in the direction orthogonal to the guide direction in a plan view;
• a second pin provided on the second module and protruding in the direction orthogonal to the guide direction in a plan view;
• and
• a first connecting member having a first fitting hole and a second fitting hole arranged in the guide direction, the first connecting member being fixed to the first module and the second module in a state where the first pin is fitted into the first fitting hole and the second pin is fitted into the second fitting hole.