TM 5-6675-316-14
12-6.4
Optical Macroscope.
a.
Place optical macroscope over area to be viewed with illumination slot close to
specific area required.
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b. Loosen barrel lockscrew.
c.
Look through eyepiece and depress push/pull cam switch.
d. Grasp lens barrel and move it slowly up and down until area to be viewed is
seen clearly and sharply together with graduated scale.
When target and graduated scale appear simultaneously sharp and clear, clamp
barrel lock screw.
f. To provide light without keeping push/pull cam switch depressed, turn
push/pull cam switch in either direction through 90 degrees to lock it. Rotation in
opposite direction will unlock it.
To make
Scale is 0.150
estimations of
measurement, read size of object or target directly from scale.
in. in length and is divided into intervals of 0.001 in. With care,
down to 0.0005 in. are possible.
12-18