The 819M-B-11-1.0 is a C-mount (1-32 UN 2A) male adpater.  It has a clear aperture of 11 mm, and inside the adapter has a barium sulfate coating. 

• 探测器类型

  Sphere Accessory

• 输入端口尺寸

  Mount to 1 in. port

• 法兰类型

  819C/D sphere flange

• 通光孔径

  11 mm

• 
  

819M-B-11-1.0是C-mount (1-32 UN 2A)男性adpater。它的孔径为11毫米，适配器内部有一层硫酸钡涂层。