(2) Use of the battery sheaths. If iron-armoured
cells are used in this model, magnetic field
effect w ill cause big error of reading. W ith
out the sheaths, the meter w ill read error
on plus side.
Always use them when the
batteries are replaced.
[3j
As the schematic diagram shows, the
polarities of the measuring terminals are
reversed for resistance ranges, the plus terminal
being in minus and the minus terminal in
plus potential. It must be remembered when
semiconductor circuits are checked.
CAUTION.
1, Do not check resistance while power is
on. Be sure the electric charge of con
densers is discharged.
2; W hile checking, keep off the fingers
from the metal parts of the test leads:
part of the current runs to the ground
through the body causing erroneous
reading.
(3) Do not leave the range switch set to
- 22