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