Count the number of blocks between the rate that you want to determine. The EKG graph paper is divided into one millimeter size squares. The distance between each square (going from left to right) represents 0.04 seconds. The one millimeter blocks are the smallest subdivisions on the EKG paper...
Count the number of blocks between the rate that you want to determine. The EKG graph paper is divided into one millimeter size squares. The distance between each square (going from left to right) represents 0.04 seconds. The one millimeter blocks are the smallest subdivisions on the EKG paper...