The Cardio Calipers allow measurement of any EKG, no matter what format the EKG image is in.
Simply open up your EKG in any image viewer application and move the Cardio Calipers into place with the mouse.
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Manipulating the application is simply accomplished through use of the mouse, and a variety of keyboard controls allow for extra fine alignment. The Calipers can be aligned to measure an entire EKG complex, QT interval, PR interval, and QRS duration.
The Compass can be used with any program as they float over other applications allowing quick and easy measurements. Read the full specs on how everything works.