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manual for commanders of infantry platoons. - US Army Combined ...

manual for commanders of infantry platoons. - US Army Combined ...

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To take~the direot~ion ori azimiuth, <strong>of</strong> &icdistant object% (fi~,<br />

135) .--Clean the faee, diriect the airrorw o'n the ob~ject -as accu~<br />

rat'lely as possible, and.tur~n the rest <strong>of</strong> the b~ox eso that the blue~<br />

nzeedlle shall standl at zeroi The object: then is a~t13880 (from fthe<br />

manelgztic north) measured in the direction <strong>of</strong> the movement~t<br />

·rwM~<br />

,'~ ~ ~ ~~~~ ~~~~ 1<br />

1380<br />

i I~~~~~~~~~~~~A<br />

FIG. 13.FG.16<br />

<strong>of</strong>t and <strong>of</strong> .awth orgetrprcso uttecm<br />

misson support a fixed and take the mean <strong>of</strong> several readings~~~~~<br />

I~e~age"b" i cale th antcaiuh <strong>of</strong>B.<br />

afthedeliatin(ssme at~ 130h gthis inr paretficular plae), the1<br />

readin <strong>of</strong> : th~eiblackaroxvIC would hae been 125 istv~i~ead<strong>of</strong>1s,<br />

The atngle "" thu rea called Is the geographi azimu~th <strong>of</strong> B.<br />

Kn~owing. the location <strong>of</strong> the observer on the masp, to pllot the<br />

direction <strong>of</strong> a point seen (fig., 136) .- Let A represent; the ob­<br />

VI<br />

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