H- Wave?

[sephiroth]

Where are your scope probes? Those like like shots across the battery terminals.

[forelle]

Hi everybody,
there are so many different scopeshots around and i want to ask whats the difference between this narrow spikes from me and the wide.(Thread from yesterday:Is your SSG running correctly? Are you sure!)What is the real H-Wave?
My profession is plumber and im not very familiar with elektronics.
I know normally only one question pro thread,but i try a second one.There is a way to measure the gap between coil and magnet with a screwdriver but my english is not so good and i dont understand how this was meant.Maybe somebody can explain it onesmore.
I've atached some pictures.
Thanks