The optical slots have two opposite cutting edge blades that can be adjusted to change the gap between them. Typical applications include spectrophotometers, optical systems, and diffraction experiments
The manufacturer is OptoSigma, which guarantees the highest quality
Optical slots of various variants (Optosigma PSL-0-EE, SLX-1, SLX-1-UU, PSL-0, PSL-0-UU)
See the manufacturer’s website for detailed technical information – OptoSigma