PS Magazine - MARCH 1975
PS, The Preventative Maintenance Monthly
ISSUE 268
MARCH 1975
I
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•'
I:
FOR MINE DETECTOR EARPHONES .±²
A
S
tors manufactUred by The FOurdee COM-
pany have a Bad HabiT Of lOsing ThEir Hear±
ing sLighTLy aT High alTiTUDes.
²ere's hOw TO i³prOve yO´r hearing:
Get a nuMber
25
Or
26
ga´ge DispOsaBLµ
HypOderMic needLe ¶rO³ a ³edicaL uniT·
²OLd the nee¸Le at an angLe Of a¹OUt
4³-
º
degrees tOwarD tHe center Of The earphOne
wiTH The slOpe Of The tapered pOinT »¼WN½
PusH The needLe THrOUgh ¼N¾ and ¼N¿Y
ÀN¾ of tHe
6
hOLes in each earphone untIl
it goes THrOUgH tHe rUbber diaphragM inÁ
¾acH earphOne yOU Âx ³UsT HAve a
decal On iT whicH reads, "Fkà Fix ÄppL'd,
»iaph Punct'd,
9´74"µ
Åhe DecaLs are fRee
issÆeÇ
C¼NÈS and Overseas Units can
OrDer THe decaLs by sUb³iTTing a wriTten
req´est Or ³essage tO:
US
Arm
ATTN.
y
Tr
oo
p
S
u
¶300
l
MSTS-
M
f
T
'P
or
t
Com
man
d
S
t
L
.
oo
d
Fe±
o
w
8
,
² ou1s,
Mo
6J³2O
ou
´eva
rd
C¼NÈS UniTs can alsO Order the decals
By pHOneÉ ÄÈżV¼N
69·¸¹º1»¼
ÊOTh earphOnes MUsT be ÂxeD anË bOTh
³UsT Have DecaLs½ SO, reMe³Ber TO OrDer
2
decals fOr each headseT½
ÄfTer yOU've Ìxed The earphOnesÉ reÍ
MOve the screw On THe bacK a1Îd clean a
sMall area wÏTH warM water and deTergentÐ
Ñinse and dry ThOrOUgHly ¹UT N¾V¾Ñ
iMMerse The earphOne in water½
ÅaKe The DecaL frO³ its carÒÓ WatcH the
sTicKy ÔacK THOUgH Or
Õ
yOU'Ll spend the
next few MOnths wearing TÖe decal½ Åhen
press THe decaL ÂrMLy in pLace on The bacK
Of THe earphOne sO That iT's visibLe even
wHen yOU puT the screw bacK½ ÑepLace the
scre×Ø
¾arpHOnes are being Made now wiTh
speciaL ÂlTers tHaT eqUalize tÙe air pressure
sÏde½ »O nOT fOrce The poinT againsT THe witHOuT a Âeld Úx½ ÊÛT tHeÜe wiLL be iDenÝ
MeTal disK UnDer The rUBber diaphragMÇ
TiÞeD so you Don't Âx The gOOd Oßesà
½
¾¿
NORs-iNG
arOUnD THE
±uPPLY sYsTeM
ᶠâãUäre senåinæ eçerè s´éêlë
reQ´esT ThrOìgÖ wiTÖ a NíÑî/ ïð¼ ÑS
sTaTUsñ òO´órµ crônæõ ö÷ãløùú
and
û
h
e
n
TÖe wOl¶ sHüýþ Or Tÿe ĀaLLOOn gOµs Up āāà
ĂOUăll Ąe in a ûãąlD 㶠ĆUrTingÓ
ćÖĈ?
ĉĊaUsµ sOãner Or laTer ċ´ééãrT
is
gãČnæ TO
lOOK ač ĎOÛr reďUesTs anĐ reélđĒ ēOĔhUMĕ
whiLµ ĖO´r ėãTĘsãęUrĚenT reě´ sTs sĜĝw
down
TÖ
e
ãnµs
your reallY N eD.
мğĠ (ġoT ¼ĢeraTiãnaLlģ ÑeaDĤĥĠ´pĦ
pLħ) and ĨNĩÑĪ īĬnTicipaTeD NOT ĭperÍ
aTiOnaLĮį ÑeaDİıSUéplIJij are séĴĵial
prÀ
1
ceD´rĶs ķOĸ Usµ ãnlĹ ĺÖĶn Ļļs aĽsOl´Tľly
±
nµcessarĿÇ
ŀnD ThaT TrŁnslaTeł as ûÖµn
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