TOPINCN The Membrane of Iris Apertur with an Adjustable Inner Diameter of 1.5 Mm to 26 Mm and 45 Outside Diameter, Easy to Use, Suitable for Optical Systems, Cameras and Microscopes
£35.54
This device would be most suitable for use in optical systems such as telescopes or microscopes where precise control over the aperture is needed, particularly when it comes to lenses that require an adjustable inner diameter of 1.5mm to 26mm.