SIGMAKOKI Double opening precision variable slit

This slit has two precision blades (sharp edges) facing each other, and the gap between the blades can be adjusted. This is a precision type that allows fine adjustment of the slit width for use in spectroscopes. When the slit width is 1mm or less, the slit width adjustment knob switches to fine adjustment and allows adjustment of the slit spacing with a resolution of 5?m. The left and right blades move simultaneously, allowing the slit width to be changed without changing the center position of the slit. The slit length can be adjusted by sliding the slit length variable plate. A variable slit with a rod attached (PSL-0) is also available.