Five-axis spatial precision measurement fixture

A five-axis spatial precision measurement fixture, comprising:

• a body, having a first side, a second side and a third side, wherein the first side is parallel to a first direction and has two opposite ends, the second side and the third side are connected to the opposite ends of the first side respectively, there is a first included angle between the first side and the second side, there is a second included angle between the first side and the third side, there is a third included angle between the second side and the third side, the first included angle and the second included angle are both 45 degrees, and the third included angle is 90 degrees, at least three mounting holes are provided on a first surface of the body, a center line of the at least three mounting holes is parallel to the first direction, and distances between centers of any two adjacent mounting holes are the same;
• and
• a base, wherein the body is pivotably disposed on the base, a pivot axis of the body is parallel to a third direction, and the first direction and the third direction are perpendicular to each other.