| mmmh...is that right? I always thought it was taken with the weight of the bike on the paddock stand as pictured, after all, that is the actual ride height when the bike is moving (no rider), with the weight of the bike included, not when it is supported?
I could be wrong?
Also, I have always seen the measurement taken from the top of the wheel nut (flat)?
At the end of the day, it doesn't matter too much, as the final ride height a rider settles for comes down to personal preferences, with the tool allowing you to measure it and record the height in an accurate way for YOUR OWN RECORDS for the future, if things are ever changed such as chain tension/sprockets etc. As long as the method is the same each time... | 
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