Johnson Bubble Level is a free application for Apple iphone and itouch version 3.1.3 or greater.  These smartphones/PDAs come with an accelerometer (the chip that allows your phone display to move when its tilted).  The application creates an image of a spirit level bubble vial on the screen of the phone.	
      
      
        
        
          - Works in three orientations:  flat phone (surface level), horizontal phone and vertical phone
 
		
- Calibration feature included
 
		
- Accuracy displayed to tenths
 
		
- Read "level" in various modes:  degrees, percent, inches/foot (fractional & decimal), mm/m
 
		
- Hold feature included
 
		
- Sound feature included
 
		
- Use it to straighten shelves, adjust hanging pictures, or cheat on your golf putts
 		
         
        
        
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          Phone:  800-613-3873
          Email:  info@aaatool.net
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			 Additional Information 
		  
		  
			Manufacturer: Johnson Level & Tool Co.
		  
		  
			For More Information on the Johnson Bubble Level for the iPhone and iTouch, 
[Click Here] to Link to Manufacturer Web Site