Feature:1. For Measuring: This EKG calipers set can largely simplify the marking, measuring, drafting, dividing and so on on electrocardiograph.2. High Accuracy: There is clear scale on the casing, which enables wide measurement range of 0-2.4in, also very accurate and practical.3. The Compasses: Conforms to standard design, the compasses ensures easy operation and broad application, improving working efficiency.4. Good Material: Mainly made from premium stainless steel material that has a sturdy structure and very durable for long term usage.5. Easy Carrying: Light in weight and compact in size as well, the EKG ruler can be conveniently carried in your pocket and pencil case.Specification:Item Type: EKG CalipersMaterial: Stainless Steel Casing Measuring Length: 0-2.4in.Package List:1 xEKG CalipersNote:Match the appropriate model and size before use.