Adjustable Iris Diaphragm 1.5mm‑25mm Lens Iris Diaphragm ID 55mm OD M42 to M42 Aperture Diaphragm for Optical System Camera Microscope Aluminum Alloy Stainless Steel
Wide Application: This adjustable aperture diaphragm is suitable for cameras, microscopes and other machines, which can help them work better.
Simple Operation: Just use the handle to change the aperture diaphragm diameter, which is easy to operate and more directly for adjustment.
1.5mm to 25mm: The aperture has an outer diameter of 55mm and an adjustable inner diameter of 1.5mm to 25mm, which provides small holes with different in the optical system to meet different light transmission requirements.
Highly Stable: This diaphragm is light weight, will not add extra weight for optical systems, with high strength, rust and resistance, very stable.
Reliable Materials: The aperture diaphragm is made of aluminum alloy and stainless steel, strong and sturdy, very reliable in performance.