difference between surface pit and rock chip?

Jan 7, 2018
my windshield caught some road shrapnel in the form of dirt. It happens often out here in the desert, but today I noticed some damage. I can't tell if the damage is too little to repair or just big enough to need repairing. how can you tell between a really small rock chip and just a surface pit? let me know if this is the wrong part of the forum to be posting this. Thank you
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