B&K Precision 879B - Manual - Manual (Page 6)

4
Safety Symbols
This symbol is a warning and
indicates that the user should refer to
the operating instructions located in
the manual.
DC Current
Indicates inside pin is positive (+),
outside is negative (-)
Compliance Statements
Disposal of Old Electrical & Electronic Equipment
(Applicable in the European
Union and other European countries with separate
collection systems)