National 160 SERIES Instructions Manual page 4

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and carefully remove eyepieces, rubber eyeshields, vertical viewing eyepiece tube, filters, fuse and dust
cover.
D.
Un-wrap the components, making certain that lens surfaces do not come in contact with dust, dirt,
fingerprints. Damage to optical surfaces can result from such contaminants, and reduce image quality.
ASSEMBLY
E.
Abbe Condenser: Pre-mounted in unit.
F.
Specimen holder: Pre-mounted on stage.
G.
Objectives: Unless otherwise note, they are pre-mounted on the microscope.
H.
Heads: On all series, the head comes pre-mounted to the body of the microscope. Position head so that it
faces either forward or backward, whichever suits your preference or needs, and tighten knurled head locking
screw.
1.
Dual viewing teaching head - Mounting vertical eyepiece tube with diopter to head: Loosen knurled
locking screw, remove black dust cap from vertical port. Insert vertical eyepiece tube with diopter into
vertical port. Retighten knurled screw to secure vertical eyepiece tube in place.
2.
Trinocular head - Mounting vertical eyepiece tube with diopter to head: Loosen knurled locking screw,
remove black dust cap from vertical port. Insert vertical eyepiece with diopter into vertical port.
Retighten knurled screw to secure vertical eyepiece tube in place.
4

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