Weapons
Optics
Outdoor sports equipment
Optical instruments
Visual perception
Interfaces
Optical properties of materials
Telescopic
Small arms
Dimensional tolerances
Classification systems
Tolerances of position
Performance
Telescopes
Tolerances (measurement)
Seatings
Link: BS ISO 14135-2:2017 Optics and photonics. Specifications for telescopic sights High-performance instruments
Source: BSI Standards