Specification Brand : QWLWBU BulletPoint : Item Dee Style Mighty Straight D1 Set of 4 BulletPoint1 : Step-by-Step Interpretation: Features a well-structured 7-step interpretation guide with clear reference points, simplifying complex data and enabling accurate analysis for both beginners and seasoned professionals BulletPoint2 : 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 ST elevation/ depression. The 7-step ruler helps you analyze quickly, intuitively and clearly BulletPoint3 : Material: Made from sturdy, transparent PVC, this 7 step ruler for ekg is resistan t to wear, waterproof, and easy to clean, maintaining its clarity and functionality over long-term use in demanding environments BulletPoint4 : Portable Design: Crafted in an ID-sized, transparent format, this family essential 7 step ruler is perfec tly sized to fit seamlessly into badge holders, pockets, or toolkits, ensuring quick access BulletPoint5 : For Learning and Practice: A must-have tool for EKG education and practice, suitable not only for professional docor but also for anyone wanting to master EKG interpretation. 7 Step Ruler is a reliable companion for every setting, from classrooms to clinical settings Color : blue+Transparent ExternallyAssignedProductIdentifier : 8792986698709 ExternallyAssignedProductIdentifier1 : 0785856417126 ExternallyAssignedProductIdentifier2 : 785856417126 GpsrSafetyAttestation : 1 GraduationRange : 1/16 inches IncludedComponents : No. ItemName : 2pcs ECG 7 Step Ruler,ECG Ruler Transparent EKG Calipers Measuring Tool for Accurate Heart Rate and Interval Assessment,Follow a 7 Step Plan,Portable Tool EKG Card ItemPackageDimensions_Height : 1.4 centimeters ItemPackageDimensions_Length : 13 centimeters ItemPackageDimensions_Width : 8 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : straight-edges Manufacturer : QWLWBU ManufacturerMinimumAge : 180 Material : Stainless Steel MeasurementAccuracy : 1 ModelName : Tbeste6zvaxb1yg ModelNumber : 22407951 NumberOfBoxes : 1 NumberOfItems : 2 PartNumber : 22407951 ProductDescription : Step-by-Step Interpretation: Features a well-structured 7-step interpretation guide with clear reference points, simplifying complex data and enabling accurate analysis for both beginners and seasoned professionals 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 ST elevation/ depression. The 7-step ruler helps you analyze quickly, intuitively and clearly Material: Made from sturdy, transparent PVC, this 7 step ruler for ekg is resistan t to wear, waterproof, and easy to clean, maintaining its clarity and functionality over long-term use in demanding environments Portable Design: Crafted in an ID-sized, transparent format, this family essential 7 step ruler is perfec tly sized to fit seamlessly into badge holders, pockets, or toolkits, ensuring quick access For Learning and Practice: A must-have tool for EKG education and practice, suitable not only for professional docor but also for anyone wanting to master EKG interpretation. 7 Step Ruler is a reliable companion for every setting, from classrooms to clinical settings