ECG 7 Step Ruler, ECG Ruler Plastic Ruler Measuring Tool, Transparent EKG Calipers Measuring Tool, ECG 7 Step Ruler for ECG/EKG Interpretation, Easy-to-Carry ECG Rule 7 Step Ruler: Designed with the scientific 7-step 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 Portable And Transparent Design: Crafted in an ID-sized, transparent format, this family ruler fits seamlessly into badge holders, pockets, or toolkits, ensuring quick wherever you are—perfect for 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 , intervals are out of the normal range and ST / , The EKG ruler will be an excellent addition to your ID badge Durable And High-Quality Material: Made from sturdy, transparent PVC, this 7 step ruler for / ekg is to wear, , and easy to clean, maintaining its and functionality over long-term use in demanding environments Perfect For Learning And Practice: A must-have tool for education and practice, suitable not for healthcare but also for anyone wanting to interpretation. Our 7 Step Ruler is a companion for every setting, from classrooms to