Jim, Melvyn,
Thanks for the information. I cut the cups everyday at the course where I work. That is really incredible that the first cup cutter was developed in 1829 in Musselburgh from what looks to be the down spout of the clubhouse gutter that happened to be 4.25" in diameter. And equally incredible is that it took over 60 years for that to become the standard diameter.
So does this mean that some of the Open Championships from 1860 to 1890 may have been played to cups not of 4.25" in diameter?
Melvyn, does any of your research show that Old Tom used this "Robert Grey hole cutting machine" while at Preswick or St. Andrews?
Don't know what Robert Grey's 1829 version looked like but it seems to me that of all of golf and golf course maintenance's technological advances, the cup cutter is still a pretty simple instrument.