EP Calipers provides electronic calipers for measuring intervals on images of electrocardiograms (ECGs) or electrophysiologic recordings. In the electrophysiology lab electronic calipers are included as part of the recording system. EP Calipers provides similar electronic calipers for use on your Android phone or tablet. The electronic calipers of EP Calipers are more accurate, easier to use, and less dangerous than mechanical calipers (no sharp points!). EP Calipers can open and analyze ECGs in PDF format, including AliveCor™ mobile ECG recordings. EP Calipers now includes angle calipers and a "Brugadometer" useful for evaluating ECGs for Brugada syndrome.