The M-SB19.18 Metric Lens Barrel Holder is available to mount B18 Series (18 mm) Lens Mount Barrels or mirrors on a post or in the X26 rail system. The standard optical axis height for SB19 is 19.5 mm. These holders should be mounted to UMR5 Series Linear Stages on top of CN26 Carriers to maintain the normal 40 mm optical axis height of the X26 rail system. The SB19.18 is delivered with three screws, three washers, and a retaining ring that permits direct assembly of mirrors and other optics. It has M20.25 RMS thread.

M-SB19.18公制镜头筒架可用于安装B18系列(18mm)镜头筒或镜架在柱子上或X26轨道系统上。SB19的标准光轴高度为19.5 mm。这些支架应该安装在CN26载流子顶部的UMR5系列线性级上，以保持X26轨道系统正常的40 mm光轴高度。SB19.18配备三个螺丝、三个垫圈和一个固定环，可以直接组装镜子和其他光学器件。它有M20.25 RMS线程。