The circular dented arms make opening, adjusting, and grasping the arms smooth and easy. Small screws make the end points long or short or the arms tight or loose for a comfortable feel.. Pink EKG Caliper with Cover Ruler High quality EKG ECG caliper for measuring electrocardiographs with precision.
.Stainless steel design with matte chrome finish - Carbide tipped scriber with clamp, Instruction Manual The fine-adjustment allows the slider to be precisely positioned.