a)The top field displays numbers or text depending on the mode or sub mode you are viewing.
b)The middle field displays large numbers and/or the related unit of measure of a function.
c)The bottom field displays either numbers and/or text.
d)The Mode Indictor Bar displays the main modes of the Observer. The half oblong
shape 
located just below the bar indicates the mode you are viewing. The half- moon shape 
under the mode indicator indicates the Observer is being used as a barometer (weather station) or altimeter.
e)The outer circumference of the LCD graphically tracks the units of measure based on
the selected mode.
f) On the top left, an arrow shaped 
Barometric Trend Indicator provides a quick reference view of weather conditions.
1.10 MEASUREMENTS AND UNITS
The Observer supplies two units of measure: Metric or Imperial. Each unit can be selected individually.
Metric Unit of Measure | Imperial Unit of Measure |
m | ft |
m/min | ft/min |
ºC | ºF |
hPa | inHg |
1.10.1 To Set or Check Unit of Measurement Settings
If the mode indicator is not on TIME, press the [MODE] button until it is directly below TIME.
1. Press the [MODE] and [SELECT] buttons simultaneously for 3 seconds to enter the
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