The external organisation that documented the munition
Research Organisation (4)
Colour of the munition pictured
Base Colour (10)
Colour of all, or some, of the markings on the munition
Marking Colour (9)
Language or script of the marking on a munition
Marking Script (9)
Condition of the munition pictured
Condition (6)
Key features defining the operation mechanisms of a projectile
Mechanical Feature (9)
Whether a munition is guided or unguided
Guidance (2)
Where the munition is launched from and what it targets
Domain (5)
The type of fins visible on the munition
Fins Characteristic (5)
The nominal diameter of a projectile. For most modern munitions, this is expressed in millimetres (e.g. 82 mm mortar projectile), but older artillery gun projectiles may be described in inches.
This Iranian M91 81 mm mortar projectile is marked to indicate it was produced in 2009. The AZ111A2 fuze fitted to the projectile is also marked with the same year of manufacture. (ARES)