Slot centerlines, center marks, and callouts

Hole Callout in SolidWorks, Dimensions Necessary for Drilled and Tapped Holes Solidworks

First post, be kind, but any information is appreciated I have a callout for a oblong hole Thanks for the drawing! Is that a hole right

slot 1win GD&T Drawing Callout: Surface Perpendicularity: Perpendicularity-surface In between each jaw V slot of 100 mm is cut which has measuring error

slot en ligne One for the slot center marks and one for the dimension callout 80% of all what I do ends up being sheet-metal with almost every bolt hole