PS Magazine - JULY 1973
PS, The Preventative Maintenance Monthly
1973 SERIES, ISSUE 248
JULY 1973
I
I:
l
To put in new batteries, take out the
4
screws from the panel and remove the paNEL. ±ow
repLace the batterIes²
³F the BatterIes are not snug ´n the
fr
cLampsµ squeeze the contac¶
together· easy-LIke² SLIght pRes¸uRe
,± _
²
²²
,
wiLL do It² Make ce¹aIn the polaRIty
is right²
When replacing the panel screws,
don't overlook the wasHers. Snug tHe
screws up fnger tight-not muscle
tight±
READING THE METER:
-i
O º1
voLt
0 »10
voLt¸
0 »10¼ voLt¸
O º10¼0 voLt¸
!.
Divi½E tHE REAd´Ngs by 1¼²
U¸e dirEct mEter ReadiNg¾
MuLtIPLy meteR ReAdINg by 1¼¿
MultIpLy meter ReadINg by 100À
AC
Volts²Read the bottom scale and Use tHe same p³ocedure as F³
DC
volts´
56
OµMS-¶ead tHe top scale· MUlti¸
ply tHe reading by tHe number on
whicH tHe switcH is setting´ Like²i¹
the switch is set on
XlO±
multiply
the meter reading by
10.
DC VOLTAGe MEASUREMENTS±
1² ³F you don't know the voLtage
vaLue to Be measuRed, set the seLecÁ
tor ¸witch on 1000. Then work down
one step at a time untiL the mEter
needLe reads aBout mIdscaLe² You do
this to protect the metER² Ân overÃoad
caN ruIn it²
xIoo
x²K
\
xIoK
ExT³
SHUNT
2´
ÂLways maIntaiN poLarIty² That
Is, ÄÅD proÆ to po¸itIve (+)and ÇÈÂCK
prod to negatIve (É)²
57
3µ
On DC automotive circuIt¸ you'LL
mostLy use the 1Ê0Ë 10 and 1 switch
sett´ngs²
ÂÃways star¶ at tÌe Í00
position and work down IF you need
to²
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