Stamped Brass New York Privacy Back Plate With Thumb Turn

This New York style back plate is designed for the interior side of a bedroom or bathroom door. It features a classic crescent thumb to activate the privacy mortise lock from inside the room. Made of solid, wrought brass in 4 finishes. This specialty interior back plate only is designed to work with a privacy mortise lock.

Dimensions: 7" H x 2 1/4" W.
Inside collar diameter: 5/8".
Center to center spacing from thumbturn to knob collar: 2 1/4".
Thumbturn spindle: 3/16" x 1 5/8"; oriented on the diamond.

How do I know what door knobs will work with a particular rosette or door plate? The knob shank diameter should be a little less than the inside collar diameter on the rosette.