To provide an image reader able to more easily correct skew if a reading line deviates in a reading test, thereby eliminating time and effort required for skew correction in an assembly process, and able to reduce manufacturing costs.

A carriage 21 comprises: a slide block 23 guided by a guide rail 22; and a carriage body 24 fixed to the slide block 23. The slide block 23 is fitted to the guide rail 22 in a standard position or adjustment position. While the slide block 23 is in the standard position, the carriage body 24 is positioned to the slide block 23. By rotating the carriage body 24 around a support pin 61 relative to the slide block 23 while the slide block 23 is in the adjustment position, the right angle of the carriage body 24 to the guide rail 22 can be adjusted.