• 360° of Continuous Rotation, Lockable
• 2° Graduations on Dial, Labeled Every 20°
• Unpackaged Weight: 32.9 g

The CRM1/M 30 mm cage system rotation mounts for Ø1" optics provide 360° of continuous rotation with a locking screw to fix the position of the mount once the optic has been aligned. The smooth adjustment mechanism allows for precise positioning of wave plates, polarizers, and other polarization optics. The CRM1/M has an SM1 internally threaded central hole for Ø1" optics, which are then retained with an SM1RR retaining ring. The CRM1/M rotation mount is compatible with Thorlabs' 30 mm cage system and can also be mounted on a TR series post.