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Widefield 10x/18
eyepiece
Interpupillary scale
Viewing head of microscope
Revolving nosepiece
Objective lenses
Specimen holder
(mechanical stage)
Stage
Abbe condenser 1.25 N.A.
Iris diaphragm lever
Swing-out filter holder
Illuminator condenser
Base
Models 156 & 156-S Monocular Head
Model 157 is illustrated below
Knurled diopter ring
Sliding interpupillary adjustment,
grips located on both left and right
side of diopter scale
Mark on side of eyepiece tube
for indexing diopter reading
Head locking screw
Arm of microscope stand
Rack stop adjustment screw
Knurled locking screws for securing
specimen holder to stage
Tension adjustment collar
(behind focus knob on left side)
Coarse focus knob
Knobs controlling X and Y
movement of mechanical stage
Fine focus knob
Power on/off switch and
fuse holder on back of base
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