Important: Some of the following symbols may be used on your tool. Please study them and learn
their meaning. Proper interpretation of these symbols will allow you to operate the tool better and
safer.
Symbol
Designation/Explanation
V
Volts (voltage)
A
Amperes (current)
Hz
Hertz (frequency, cycles per second)
W
Watt (power)
kg
Kilograms (weight)
min
Minutes (time)
s
Seconds (time)
⌀
Diameter (size of drill bits, grinding wheels, etc.)
n
No load speed (rotational speed, at no load)
0
n
Rated speed (Maximum attainable speed)
Revolutions or reciprocation per minute (revolutions, strokes, surface speed,
.../min
orbits etc. per minute)
0
Off position (zero speed, zero torque...)
1, 2, 3, ...
Selector settings (speed, torque or position settings. Higher number means
greater speed)
I, II, III,
Infinitely variable selector with off (speed is increasing from 0 setting)
Arrow (action in the direction of arrow)
Type or a characteristic of current
Type or a characteristic of current
Type or a characteristic of current
Designates Double Insulated Construction tools
Grounding terminal
Alerts user to warning messages
160992A7EF_GST18V50_202203.indd 6
Symbols
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3/25/22 11:47 AM