BLASHRD 2pcs ECG 7 Step Ruler,ECG 7 Step Ruler for ECG/EKG Interpretation,ECG Reference Guide Ruler,EKG Calipers Measuring Tool

Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Portable And Transparent Design: Crafted in an ID-sized, transparent format, this family essential ecg ruler fits seamlessly into badge holders, pockets, or toolkits, ensuring quick access wherever you are-perfect for on-the-go use in workplaces, classrooms, or clinical settings Easy To Read Reference: This reference card allows you to measure the heart rate, and see if the PR interval, QRS complex, QT intervals are out of the normal range and elevation/ depression, The EKG ruler be an excellent addition to your ID badge ECG 7 Step Ruler: Designed with the scientific 7-step ECG interpretation method, it provides clear, intuitive reference points for those hard to remember key points with a step-by-step follow-through process! Helps to quickly analyze ECG And High-Quality Material: Made from sturdy, transparent plastic, this 7 step ruler for ecg/ ekg is easy to clean, maintaining its clarity and functionality over long-term use in demanding environments