B&K Precision 307A - Manual - Manual (Page 18)

12. Calibration & Servicing
Contact your nearest distributor about Calibration
Certificate and Servicing .
Before returning the Instrument, ensure that :
Ÿ the leads have been checked for continuity and
signs of damage.
Ÿ The batteries are in good condition.
13. Cleaning & Storage
Periodically wipe the case with a damp cloth and
detergent; do not use abrasives or solvents.
If the meter is not to be used for long periods or
longer than 60 days, remove the batteries and store
them separately.
Warning
To avoid electrical shock or damage to the meter,
do not get water inside the case.
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