HM250U
Ultrasonic Height Meter
USER MANUAL
>
5°
>
5°
>
5°
>
5°
3. Close battery housing cover
Inserting Batteries
1. Open battery housing cover
on back of device
cm
ft
2. Insert 2 AAA batteries
Switch between
cm/ft
Preparing for measurement
Correct operation
90°
>5°
>5°
>5°
>5°
Incorrect operation
Tilt
>5°
Tilt
>5°
>5°
>5°
>5°
>5°
Tilt
>5°
>5°
>5°
>5°
>5°
Tilt
>5°
✽
Please keep the instruction manual at hand all the
time for future reference
Device not
touching top
of subject's
head
Hand
interfering
with sensor
Object
under
sensors
Hoodie
interfering
with sensor
Hand
interfering
with sensor
Make sure
the space
beneath the
sensors are
clear of
objects