TM 5-6675-323-14
LENS-PRISM-MIRROR STEREOSCOPE
Section I
INTRODUCTION
11-1.1
Scope.
a.
Model Number and Equipment Name.
Lens-Prism-Mirror
Stereoscope.
b. Purpose of Equipment.
Stereoscopic viewing of stereo-pair photographs and to
determine heights (when used with parallax bar).
11-1.2 Glossary.
. M e a s u r e m e n t of lens power and
Diopter.
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. M a r k s on edges of aerial photographs
Fiducial
Mark.
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u s e d to determine center of photo-
graph.
. Distance between center of
Interpupillary
Distance
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observer's eyes.
. Center of photographic image.
Principal
Point
of
Photograph
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Stereo-Pair
Photograph
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. P h o t o g r a p h s taken of same object or
area from different positions.
Stereoscopic
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. A n apparent three-dimensional image
obtained when viewing stereo-pair
photographs.
EQUIPMENT
DESCRIPTION.
11-2.1 Equipment
Characteristics.
Capabilities,
and
Features.
Removable binocular assembly permits full stereoscopic viewing of 9 in.
X 9 in. (22.9 cm x 22.9 cm) aerial photographs.
b. Four-power magnification with binocular assembly.
c.
Lightweight.
d. Folds for storage.
e.
Adjusts for uneven surface.
