If you know of any races in need of a large digital clock for timing their event, my clock is for rent.  It's four feet long and the numbers are seven inches high.  It's a great clock.  It works by a remote control, can count up or down, and is enclosed in the box below to keep it safe from the elements.  I rent it for $50.  I only use it a few times a year so I can rent it out whenever.  
Great for races, school parties, church functions, etc.

Digital Race Clock