Bow Sound - Harmonically quantifiable?

Michele

I've always found it difficult to hear the difference in sound produced by an expensive bow compared with a lesser one.

I don't hear anything that couldn't be accounted for by horsehair or rosin.

Are the harmonic rigs used to detect and record the sonic spectra of violins able to demonstrate the differences between say, a Sartory and a German trade bow?

Monika

If you are talking about up close bow noise, it's bound to be much the same from all bows.
The sound the bow makes from the back of the hall is another matter.
Don't see how a high tech quantifier would help.