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
Volts (voltage)
V
Amperes (current)
A
Hertz (frequency, cycles per second)
Hz
Watt (power)
W
Kilograms (weight)
kg
Minutes (time)
min
Seconds (time)
s
⌀
Diameter (size of drill bits, grinding wheels, etc.)
No load speed (rotational speed, at no load)
n
0
Rated speed (maximum attainable speed)
n
Revolutions or reciprocation per minute (revolutions, strokes, surface
.../min
speed, orbits etc. per minute)
Off position (zero speed, zero torque...)
0
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)
Alternating current (type or a characteristic of current)
Direct current (type or a characteristic of current)
Alternating or direct current (type or a characteristic of current)
Designates double-insulated construction tools
Grounding terminal
Alerts user to warning messages
GFA12-H manual DRAFT 20220121.indd 6
Symbols
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1/27/22 8:07 AM