Seconds scale for PR, QRS, Cycle, Length, Coupling, Escape, and Parasystolic Intervals. Measures just 1 11/16 x 6 3/8 small enough to fit in a medical coat pocket.
Seconds scale for PR, QRS, Cycle, Length, Coupling, Escape, and Parasystolic Intervals. Measures just 1 11/16 x 6 3/8 small enough to fit in a medical coat pocket.