The Pipe,

Thanks for the informative post. I wasn't particularly advocating the use of the Master tach, I just happen to have found a link to it and thought it might be of interest.

As for the current crop of 'hobby' digital tachs, they all seem to be much the same in that I've heard of people with difficulties with various models in respect to getting a reliable reading. This is in line with own experience with my H9 tach.

The TNC tach seems to be the exception, its certainly on my list of useful accessories...