Updated link as I posted the wrong one.
My wife bought me this as a Birthday gift. Need to buy solution to calibrate but not sure where it what I need. Even if I knew how useful would it be for this hobby. I hate to sound unappreciative but for the money she spent i don't see it. I am considering returning it but wanted your opinions before I tell her.
	
	
		
			
		
		
	
			
			My wife bought me this as a Birthday gift. Need to buy solution to calibrate but not sure where it what I need. Even if I knew how useful would it be for this hobby. I hate to sound unappreciative but for the money she spent i don't see it. I am considering returning it but wanted your opinions before I tell her.
			
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