The Febz ST ruler is an indispensable pocket-sized ID reel badge, a must-have for all critical care medical professionals. Its robust construction and clear prints make it a reliable tool in high-stress environments. The colour-coded design provides easy anatomical representation, while the ruler's edge helps identify arrhythmias. Vibrant colours represent the affected coronary area, making it an invaluable resource for medical and nursing students. This compact yet comprehensive tool is a necessity for anyone in the healthcare field, allowing for quick and accurate assessments in critical situations. With its sturdy build and user-friendly design, the Febz ST ruler is a reliable companion for medical professionals on the go. Will be an add-on to the Febz EKG ruler.