M23.2 可調整長度鏡筒

M23.2 Adjustable Length Tubes are designed to connect M23.2 Fixed Extension Tubes or Cage System Optical Lens Mounts to construct optical assemblies of varying length. One end of the tube is fixed and has M23.2 x 0.75 male threading, while the other end features a locking ring with male M23.2 x 0.75 threading. The locking ring slides along the length of the tube, enabling the adjustment of the system’s length.