Shotgun sight question

[Blackrock]

Do the hashmarks on the side of a 870 barrel mounted rear sight correlate to any distances?

Thank You

Roc

[Scorpion8]

Is this a rifle-style rear sight? Normally no, those are simply references so you know if you've moved it up or down, and you go too far, that you can return to where-you-were again.

[Blackrock]

Standard Barrel mounted rear sight on a 870 Wingmaster.