Page 18 - Testing Electronic Components

Analogue multimeters can measure both DC voltages (marked DCV or
Vdc) and AC voltages (marked ACV or Vac). It is important to remember
that all voltage (either AC or DC) must be measured in parallel with the
desired circuit or component. Never interrupt a circuit and attempt to
measure voltage in series with other components. Any such reading
would be meaningless, and your circuit may not even function. If you are
unsure of what range to use, start with the largest range to prevent
possible damage to the meter. To check the 9 Volt batteries, I’ve
selected the 10 DCV range as shown below.

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