reset Scale of all or some objects

Is there currently a way to reset the scale of all or some, i.e., selected objects?

If not, this would be useful, or likewise, a way in which to 'match' the scale of one object to another or a group of objects to another, on the fly.

For example, you add new objects to a patcher that has been previously scaled but you want the newly added objects to match the scale of the existing objects without painstakingly scaling and re-scaling manually.