Usually a friend in a group that calculates everything to the penny, including the bill at the diner, but not because he is cheap. He is also someone who cannot accept a range of dates as an answer to a trivia question or a past score from a World Series game or Super Bowl without googling it.
Tim:Hey Bill, you know I just learned from John that Pacino didn't win an Oscar for Scarface.
Bill: Really, I just learned that John is the Precise Guy, and keeps googling every movie we mentioned just now, over dinner. to find out the exact year it came out.
Tim:By the way Bill, John says you owe exactly $14.28 cents for your meal.