UBTC UGS 54509 Instructions page 79

Proper way of measurement
1 Remove all clothes from your arm allowing the
cuff to fit directly on the skin.
2 Wrap the cuff tightly around your wrist by using
the Velcro strip.
3 Turn your palm upwards, stretch your fingers and
wrist naturally.
4 Use a soft stuff below the BP monitor to support
your arm as the figure shown below.
5 Keep your wrist at the same level of your heart.
6 Sit upright in a chair, and take about 10 times
deep breath to relax your entire body, especially
between your elbow and fingers. Then turn on the
unit and start to measure.
No touching