There is a Legacy version
here.
Eye for Numbers [one-action] Feat 1General Skill Source Player Core 2 pg. 230Prerequisites trained in
Society
You've learned to quickly estimate the number of items in a group with relative accuracy at only a glance. You immediately learn the number of visually similar items in a group you can see, rounded to the first digit in the total number. For example, you could look at a case of potion vials and learn that it held about 30 vials, but you wouldn't know that it was exactly 33 vials, how many different types of potions there were, or how many of which type. Similarly, you could look at a pile of 2,805 coins and know that there were about 3,000 coins in all. You can use this ability only on items that can typically be counted, so you can't use it on grains of sand or stars in the sky, for example.
If you count a specific number of items possessed by an enemy, such as the number of coins or pieces of equipment they're carrying, you can use this information the next time you
Feint or
Create a Diversion against that target within 1 minute. If you do, you gain a +1 circumstance bonus to your check and can use Society instead of
Deception for the check.
You can use this action during an attempt to
Decipher Writing that is primarily numerical or mathematical to gain a +2 circumstance bonus to your check.
Traits
General: A type of feat that any character can select, regardless of ancestry and class, as long as they meet the prerequisites. You can select a feat with this trait when your class grants a general feat.
Skill: A general feat with the skill trait improves your skills and their actions or gives you new actions for a skill. A feat with this trait can be selected when a class grants a skill feat or general feat. Archetype feats with the skill trait can be selected in place of a skill feat if you have that archetype’s dedication feat.