A Slide Rule! A gift to Becky from her grandmother.

"See how its all on a logarithmic scale? I'm sure this will be of great use to Becky. We never went anywhere without one. When Gwen was in third grade, I showed her how to calculate batting averages. My brother Bob and I each had our slide rules and figured it out for each of the Cubs players as they were up -and boy, we were really fast. We were so disappointed to find out that Jack Brickhouse wasn't actually calculating them right there in the announcer's booth - it was already printed up ahead of time."