Span
Gauge Review by Mike Davenport June 2009
Mike Davenport, well known rowing coach and author of 'The
Nuts and Bolts Guide to Rigging' says:
"....after about a week of using it, it
became my measuring device of choice. I liked the way it felt, the aluminum is
nice, and it gave very accurate measurements. I also found it to be a lot more
durable than I thought. One real testimony to it was that the other coaches
around also wanted to use it".
Also
see his video review here:

Mike's site also has a wealth of other content that
would be of interest to both rowers and coaches: www.maxrigging.com/