I don't own an expensive ballhead. In fact, I own a relatively inexpensive ball head from a now defunct photography equipment company named Amvona. It is the ATH-A09 ball head and I am missing one of the main knobs. I don't know where it went... perhaps I wasn't kind enough to it.
Is there something that I could purchase to replace the knob? Could I walk into a Home Depot and find something I could use instead? I don't want to spend much money.
Thanks.


