Swift M2250 Series, User And Care Manual

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COMPONENTS OF THE MICROSCOPE
ARM – the vertical column (attached to the base) which supports the
stage and contains the coarse and fine adjusting knobs and focusing
mechanism.
BASE – the housing and platform of the instrument to which the arm is
attached. The base stands on rubber feet and contains the illuminator
assembly. The bulb replacement part number is printed on the underside
of the base.
COARSE FOCUS CONTROLS – this model is a stage focusing model
meaning the stage moves up or down by means of a brass rack and steel
pinion gear to bring the specimen into focus. The movement is achieved
by two large knobs on the sides of the arm. In order to prevent gear
damage, the focus control is equipped with a slip clutch that allows
slippage at both ends of the focusing range. The system is also furnished
with a tension control to prevent “stage drift”.
CONDENSER – the condenser is mounted in the stage and it is used in
conjunction with a substage disc diaphragm (M2251B) or an iris
diaphragm (M2251C, M2251CL). The function of the condenser is to
provide full illumination to the specimen plane and to enhance the
resolution and contrast of the object being viewed.
DISC DIAPHRAGM (M2251B) – the disc attached to the underside of the
stage. The disc has 5 apertures (openings) and is used to increase or
decrease the contrast of the specimen. Its purpose is to provide the
appropriate aperture for the objective being used and assists with
providing optimal contrast for viewing the specimen.
EYEPIECE – the upper optical element that further magnifies the primary
image of the specimen and brings the light rays in focus at the eyepoint.
FINE FOCUS CONTROLS – the fine focusing knobs, located on either side
of the microscope, in front of and slightly lower than the coarse focusing
knobs, are used for precise focusing adjustments once the specimen has
been brought into view with the coarse focus controls
HEAD – it is the top portion of the microscope that contains the
refracting prisms and the eyepiece tube. The eyepiece is locked onto the
eyepiece tube with a set screw. The head rotates allowing operation of
the microscope from the front or the back, whichever is more