Metabo SBE 780-2 Notice Originale page 16

en ENGLISH
a = Vibration emission value (impact drilling
h, ID
into concrete)
a = Vibration emission value
h, D
(drilling into metal)
K ,K =Uncertainty (vibration)
h,ID h,D
Typical A-effective perceived sound levels:
L = Sound pressure level
pA
L = Acoustic power level
WA
K , K = Uncertainty
pA WA
Wear ear protectors!
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