30mm Coaxial System Rotary Adjustment Mount

LBTEK 30 mm coaxial system rotation mounts come in four models: CRM-1AS, CRM-1BS, CRM-1ADS, and CPRM-1A. They are suitable for mounting Ø25.4 mm optical components and feature an M4 threaded hole at the bottom for connecting to rods, along with four Ø6 mm through holes. The mounts can be fixed to a 30 mm coaxial system using side M4 set screws. The CRM-1AS, CRM-1ADS, and CPRM-1A models all include SM1 internal threads and come with an SM1R retaining ring for securing optical elements with a maximum thickness of 9.4 mm. They can also be used to mount optical elements with SM1 external threads. The CRM-1BS has a smooth inner wall and secures optical elements with a minimum thickness of 7.9 mm via set screws. The rotation mounts allow continuous 360° rotation, with a dial accuracy of 2°. Angle markings are engraved every 20°, and an M4 locking screw on the side is used to secure the rotation. The CRM-1ADS, based on the CRM-1AS, features differential scales with 10 divisions on each side and a differential accuracy of 0.2°. The CPRM-1A is a precision mount with a micrometer head, offering fine adjustment travel of ±7°. The micrometer provides 1° per revolution, and the differential scale has an accuracy of 5' (0.08°).