Adjusting the Zeiss

Note, someone will probably have to point out where each adjustment is located before you can do this yourself.

Adjusting the phase rings.

  1. There is a small silver disk sticking out from just beneath the front of the stage.  It has a small vertical pin.  This disk provides one adjustment for the phase rings.  Unfortunately, it is easily bumped; therefore the rings are easily knocked out of alignment.
  2. Turn the silver magnification dial located above the scope to PH.  This dial also has designations for 1X, 1.25X, 1.6X, and 2X magnifications.
  3. The lower half of the silver disk is turned until a dark and light ring come into focus.
  4. Center the rings by turning the small silver disk at the front of the stage and sliding the thumb screw lever located on the left side below the stage.  Be cerain you have the correct lever.  There is another lever lever that only turns and it centers the condenser.  The thumb screw lever can be tightened by turning the screw - you may need to untighten this before you can move the lever.
  5. Once the rings are centered, set the magnification to 1X and your sample should be clear.

Adjusting the condenser height.

  1. The condenser is located below the stage and it is where the light is emited just below the sample.  Its height can be adjusted by a knob situated near the focus knobs on the right of the scope.
  2. Focus on the sample.
  3. Close the aperature at the base until the fins of the aperature are visible.
  4. Adjust the condensor height to bring the fins into focus.

Focusing eye pieces.

  1. Focus on the object with 40 X.
  2. Turn back to 10X and focus each eye piece.
  3. Turn back to 40X and each eye piece should now be in focus.

Centering the condenser.

  1. There are two screws projecting outwards near the body of the scope below the stage.  Close the aperature until a small area of the field is visible.
  2. If the illuminated area is not centered, turn the condenser screws until the light is centered in the field.
  3. Open the aperature until the entire field is visible.