Elementary map and aerial photograph reading Page: 59
116 p., ill., diagrs., maps Enclosed at end: Change 1 (20)View a full description of this book.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
COVER
LUMINOUS DOT
FRONT SIGHT
(HAIRLINE)
LUMINOUS DOT
MOVABLE BRASS RIM '
DIAL
SCALE I L
270 DOT
DOTr STATIONARY
INDEX90" DOT
/ RIM HOLDER
LENS
LUMINOUS
mayLINE
UNW 45 LUMINOUS LINE
(REAR SIGHT
S.EYEPIECE
HOLDING RING- O
MOVON
'ABLEavenue or azimuth numbers.
Compass reading is easy, if it is done correctly. For
example, it is important to hold the compass correctly.
Remember to point the compass in the general direction
you want to go before you try to use it, and hold it level.
Figure 77 shows the compass ready to be used in day-
time sighting. Figure 78 shows how to hold the com-CRYSTAL
Figure 76.
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United States. War Department. Elementary map and aerial photograph reading, book, August 15, 1944; Washington D.C.. (https://digital.library.unt.edu/ark:/67531/metadc96653/m1/65/: accessed April 23, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.