Electrocardiogram scale 70 x 1.5 x 165 mm 25-3032 1 sheet

If you line up the arrow with one of the R waves on the electrocardiogram, the fourth R wave will tell you the number of beats per minute. By reading the red numbers on the second R wave, you can measure bradycardia or variability. It is also possible to measure ST changes, R and S wave heights, and calculate the QT interval (QTc). Easily determine whether the QT interval (QTc) is normal or abnormal. Width x thickness x length (mm): 70 x 1.5 x 165 Material: PMMA (acrylic) 4×RR double display scale, 2×RR 25mm/sec Model number: 25-3032