B Series Lens Mount Barrels can be used to create optical systems by mounting them to X26 Rails and Carriers via SB or CB Series Lens Barrel Holders. The lens barrels consist of a threaded body and a retaining ring. They are designed such that two or more lens barrels can be threaded end-to-end for multi-lens systems. Several accessories are provided to assist in creating optical systems: The B20-RMS Focusing Barrel allows axial translation of an optic over 5 mm by turning the knurled knob. The B25.4-RT Rotation Barrel allows 360° rotation of an optic with 2° graduations. The B25.4-F Barrel allows 25.4 mm diameter mirrors or lenses to be mounted to M20.25 RMS-threaded components such as the CB26.18. SB Series Lens Barrel Holders, which mount directly to X26 Rail Carriers, are available for sizes of B Series Lens Mount Barrels having M20.25 RMS, M30 or M55 threads. CB Series Lens Barrel Holders, which mount directly to X26 Rails, provide a means of holding B Series Lens Mount Barrels having M20.25 RMS or M30 threads.

B Series Lens Mount Barrels can be used to create optical systems by mounting them to X26 Rails and Carriers via SB or CB Series Lens Barrel Holders. The lens barrels consist of a threaded body and a retaining ring. They are designed such that two or more lens barrels can be threaded end-to-end for multi-lens systems. Several accessories are provided to assist in creating optical systems: The B20-RMS Focusing Barrel allows axial translation of an optic over 5 mm by turning the knurled knob. The B25.4-RT Rotation Barrel allows 360° rotation of an optic with 2° graduations. The B25.4-F Barrel allows 25.4 mm diameter mirrors or lenses to be mounted to M20.25 RMS-threaded components such as the CB26.18. SB Series Lens Barrel Holders, which mount directly to X26 Rail Carriers, are available for sizes of B Series Lens Mount Barrels having M20.25 RMS, M30 or M55 threads. CB Series Lens Barrel Holders, which mount directly to X26 Rails, provide a means of holding B Series Lens Mount Barrels having M20.25 RMS or M30 threads.