Bosch DH507 Operating And Safety Instructions Manual page 5

2610048699.qxp_DH507 10/4/17 11:15 AM Page 5
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
I, II, III, greater speed)
Infinitely variable selector with off (speed is increasing from 0 setting)
0
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)
Class II construction (designates double insulated construction tools)
Earthing terminal (grounding terminal)
Symbols
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