Gauging the Resonant Frequency

Take these scanners to the Singing Ridge. By dropping them in a pattern on the ground, you will create overlapping fields that will read the amplitude of the crystals. Stand amidst them in such a way that you're in five oscillation fields and I'll have the information that I need! Your scanners will even work with those that others drop. Oh, and it's likely that a rift will be formed! I have no idea what, if anything, will come out of it, but be prepared for the worst.