Maya Match Scale

Maya_MatchScale.py

import maya.cmds as cmds
import pymel.core as pm


def matchScale():

    # get selection
    sel = pm.ls(selection=True)

    if len(sel) < 2:
        pm.error( 'Please select two objects' )
    
    else:
        srcObj = sel[0]
        targets = sel[1:]
        
        srcSc = pm.xform(srcObj, query=True, scale=True, worldSpace=True)
        
        for tgt in targets:
            pm.xform(tgt, worldSpace=True, scale=srcSc)

matchScale()