
Names of Parts
1) JM-103 main body
POWER switch
• Slide this switch to turn the power ON/
OFF.
• Using this switch in combination with
the RESET button allows you to switch
to check mode and change the unit of
measurement.
READY lamp
Lights up to indi-
cate that the in-
strument is ready
for the next mea-
surement.
Display
Displays the mea-
sured value etc.
❋For the method
of r ea di ng th e
display, refer t o
“ R ea d i n g th e
Display” on page
12
Measuring probe
Takes measurement
when pressed against
the measuring point.
Charger contact
Used to connect the
Charger unit.
RESET button
• Deletes the currently displayed
measured value and prepares for
the next measurement.
• Using this switch in combination
with the POWER switch allows
you to switch to check mode and
change the unit of measurement.
• In addition, holding this button
down allows you to set the num-
ber of average measurements to
be performed.
Strap attach-
ment area
Attach the strap.
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