ASFKAP,
I got my information from a 737-300 video of a GO flight from Stanstead to Lisbon. The plane had just been delivered (this was 1999) from Seattle two days before the flight and the captain (who was the chief pilot for GO at that time) says, during the flight, that "an interesting fact about the trim wheels is that the left-hand one and the right-hand one are made by two different manufacturers." Unfortunately, the good captain didn't say WHY they were made by different manufacturers. I was just curious so I'd thought I'd ask the pros.
I appreciate the responses.
Cheers!