![Optical Apertures](https://d27wgn5g4t3wja.cloudfront.net/products/47957b1a-cb0d-457d-96cb-0e13533283b7/449942.png)
Optical Apertures
The APPLIED IMAGE Optical Aperture reticles are available in sizes from 10μm (0.01mm) to 1,000μm (1.0mm) center openings (noted by -10, -25, -30 etc.), on either Chrome on Glass or Chrome on Opal material, with an overall size of 25.4mm (1.0 inch) diameter.