What is the factory default size of the dock in OS X El Capitan?
On a fresh install this shows nothing:
defaults read com.apple.dock tilesize
I'm trying to set it back to it was when I installed El Capitan. I accidentally grabbed the slider and resized it.
Turns out it is 64 - found this out by deleting the value, restarting the dock, clicking on the resizing area but not dragging it, letting go, and then checking the value.