pitchometer

For years, repairing a prop has involved the use of pitch blocks, similar to specially shaped anvils, and pitchometers. Placed under propeller blades, pitch blocks give the prop repairman a surface against which to restore the blade to factory shape and angle. The repaired blade is then checked with a pitchometer to determine how close to specification it is.

A batter's best hope for hitting one of these 90 mile-per-hour missiles that reached the plate in just less than a second was his 200 mph swing. Speeds were then measured by electronic “pitchometers”; in 1946 Bob Feller's fastball could be timed at 98.6 mph.