BS ISO 14490-3:2021

This standard BS ISO 14490-3:2021 Optics and photonics. Test methods for telescopic systems is classified in these ICS categories:

• 37.020 Optical equipment

This document specifies test equipment and test procedures for determination of the following optical characteristics of telescopic sights:

1. axial parallax;

2. parallax;

3. eye relief range, eye relief, critical eye relief;

4. reticle tracking;

5. line of sight shift due to zooming;

6. line of sight shift due to focusing.