Assertion: ecg | /r/HasProperty | printed on graph paper
Facets:
value: at a standard scale
type: OTHER
value: for ease
type: PURPOSE
Source sentences:
text: For ease of measuring the amplitudes and intervals, an ECG is printed on graph paper at a standard scale: each 1 mm (one small box on the standard ECG paper) represents 40 milliseconds of time on the x-axis, and 0.1 millivolts on the y-axis.