Essential EKG Ruler Pocketcard in English _x000D_ _x000D_ _x000D_ Essential EKG Ruler Pocketcard in English _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ Fast essential EKGmeasurement for on paper and screen of patient monitor defibrillator _x000D_ perfect for everyday clinical routine use and first respond service _x000D_ Lightweight, small size, MRI Safe and disinfectable _x000D_ _x000D_ Colour: transparent _x000D_ Material: plastic _x000D_ _x000D_ Package Contents: _x000D_ 2 x EKG Ruler _x000D_ _x000D_ Only the above package content, other products are not included. _x000D_ Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_