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20
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When measuring, please follow the instructions below:
• Relax your body and sit upright as much as possible. If you are nervous, take a deep breath.
• Keep your heart position in the same level as the heart symbol
on the arm cylinder.
Generally, the heart is in the thoracic cavity between the 2 lungs, approximately between the
2
nd
rib and the 5
th
rib of left chest bones from the body surface.
• The recommended height difference between the desk and chair is
25 to 30 cm. Please adjust
the height of the desk or the chair to keep your heart position in the same level as the heart
symbol
on the arm cylinder.
Fig. 4.3
• The distance between the device and the edge of the table, the body and the table edge is
recommended to maintain about 2 cm each. The distance will be different as the height and
weight of the user is different, anyway, please keep your back straight.
Fig. 4.4
• Do not speak, laugh, move or shake the body.
Fig. 4.5
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Incorrect posture when performing measuring (e.g., bowing, sitting on sofa or low desk with legs
crossed, bending down, etc.) may lead to incorrect measurements.