• Adjustable Iris Diaphragm made of quality black metal
• 3" (75mm) diameter, maximum inner diameter of 1.25" (30mm). 2.5" rod, 5" total length
• Used to control the amount of ambient light reaching a sensor to ensure effective imaging
• This optics instrument is perfect for any lab, professional, or home setting

Adjustable Iris Diaphragm made of quality black metal. Used to control the amount of ambient light reaching a sensor to ensure effective imaging.

Size: 3" (75mm) diameter, maximum inner diameter of 1.25" (30mm).