【7 Step Ruler】: Provides a clear, intuitive reference for analyzing with a step-by-step follow-through process
【Portable and Transparent Design】: Fits seamlessly into ID badge holders, pockets, or toolkits for easy access on-the-go
【Durable and High-Quality Material】: Made from sturdy, transparent PVC, the ruler is resistant to wear, waterproof, and easy to clean
【Perfect for Learning and Practice】: A must-have tool for education and practice, suitable for healthcare professionals and anyone wanting to master interpretation
【Easy to Read Reference】: Allows for measurement of heart rate and identification of abnormal intervals, making this ruler an excellent addition to your ID badge