Counterbore Options

counterbore slot callout   Dan counterbore slot callout

or if not, what is a better way to make the callout? Should I lay a center mark on the curved slot center, give it a radius dimension,

Counterbored holes are specified by giving the diameter of the drill, the diameter of the counterbore, and the depth of the counterbore  * delimiter ; breaks format into callout line 1; dimtext line 2; and callout line 3 SLOT-COUNTERBORE-BLIND=hw-diam> X hw-slot-length> HOLE-DEPTH> hw-depth>

the book beyond – chapter 1_ the riddle of the sands slot Counterbore Symbol One was created using the hole wizard and the other ose created by extruded cutting a slot sketch When I callout their dimensions on a drawing,