Linear scale

A linear scale comprising:

• a long scale frame, the long scale frame being fixed to a first measurement target part and containing a scale;
• a detector, the detector being fixed to a second measurement target part and configured to detect an amount of relative movement with the scale;
• attachment holes, the attachment holes being provided on both of one end side and another end side of the scale frame with respect to a measurement direction, the attachment holes being formed penetrating from a rear face of the scale frame facing the first measurement target part to a front face of the scale frame located on the side opposite from the side on which the first measurement target part is located;
• rear-face bushings inserted into the attachment holes from a rear face side of the scale frame;
• and
• fasteners configured to fix the scale frame to the first measurement target through the attachment holes and the rear-face bushings,
• wherein each of the rear-face bushings includes:
• a cylinder part formed shorter than the length of the attachment hole with respect to a penetration direction and having an outer diameter smaller than an inner diameter of the attachment holes;
• a flange formed at the end of the cylinder part located toward the first measurement target part and having an outer diameter greater than the inner diameter of the attachment holes;
• and
• an elastic member, the elastic member having a cylindrical shape and being provided covering an outer circumferential surface of the cylinder part, and
• each of the fasteners includes:
• a shaft part inserted into the cylinder part;
• and
• a head part having an outer diameter greater than the inner diameter of the attachment holes.