| 摘要 |
In a laser apparatus: an adhesion surface and a first reference surface making a first predetermined angle with the adhesion surface are formed on an attachment part, and a mounting surface and a second reference surface making a second predetermined angle with the mounting surface are formed on a fixing member which is directly or indirectly fixed to a main body and arranged to adhesively hold the attachment part. In a method for assembling the laser apparatus: a first angle between the second reference surface and a reference direction is measured; the orientation of the attachment part is adjusted while measuring a second angle between the first reference surface and the reference direction; and the attachment part is adhesively fixed to the fixing member when the second angle is equal to an angle predetermined based on the first angle and the first and second predetermined angles.
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