Optical Slit Diaphragm Manual Single Opening Micrometer Adjustment Table

Precision Optical Experiment One-Way Fine-Tuning Blade Manual Adjustable Slit

Precision Manual Adjustable Slit Optical Experiment One-Way Fine-Tuning Blade

Manually Adjustable Slit Optical Unidirectional Micro-adjustment of Knife Edge

Precision Manual Adjustable Slit Optical Experiment One-Way Fine-Tuning Blade

Precision Optical lab slit 20um x approx 4mm.

Optical Single Opening Slit Experiment Platform Luminous Flux Adjustment Frame

Laboratory Adjustable Slit