Speaker Positioning


I know from speaker position is critical in achieving the best results from a given system. Is there a dynamic way to measure placement of each speaker to make certain they are the exact same distances from back/side wall, cabinets, seating, etc. beyond a measuring tape and listening to the results? Seems to me if minor differences pay large returns, you could be tinkering with this a long time.  Thanks for the indulgence.  
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Is speaker placement not also dependent on the type of speaker? I've had dynamic, electrostats, and currently horns and each required significantly different positions and room treatments to get the "best" sound. 
There is no perfect way. Put in a position where they sing to you. At that point you can add room treatments. If you feel you need a lot of room treatment you might have the wrong speakers or preamp or Amp. 
Get a book like Jim Smith "Get Better Sound". Read it and start there. There's no experience like your own experience.