POSP rifle scope reticle. In the bottom-left corner is a <a href="//commons.wikimedia.org/w/index.php?title=Stadiametric_rangefinding&amp;action=edit&amp;redlink=1" class="new" title="Stadiametric rangefinding (page does not exist)">stadiametric rangefinder</a> that can be used to determine the distance from from a 170 cm (1.7 m or 5 ft 7 in) tall person/object from 200 m (2) to 1000 m (10).
<a href="//commons.wikimedia.org/w/index.php?title=User:BelSE&amp;action=edit&amp;redlink=1" class="new" title="User:BelSE (page does not exist)">BelSE</a>
CC BY 2.5
<span class="int-own-work" lang="en">Own work</span>