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Drawing tube
• The drawing tube is for both left-handers and right-handers.
Fit the mirror on the left-hand or right-hand side of the optics
carrier.
̈ Fit the drawing tube between optics car-
rier and binocular tube as described on
page 50.
̈ Place a sheet of paper beneath the
mirror.
̈ Use a table lamp to illuminate
the paper.
̈ Move the lever to the circle.
̈ Look into the binocular tube, position
the object, and focus on it.
̈ Move the lever to the black spot.
̈ Look into the binocular tube and balance
the brightness so that the object, the
drawing surface and the pencil are all
seen together.
• In general, the paper needs to be illuminated strongly, but the
object only weakly.
̈ Move the lens mount of the drawing tube forwards or back-
wards until the drawing surface is sharply imaged.
̈ Now you can draw the feature.
• If you place a graduated scale beneath the object and draw
its intervals as well, you can easily determine the image
scale on the paper.
Discussion tube
At the discussion tube two observers see the same erect,
laterally-correct, three-dimensional image.
The assembly and use of the discussion tube are described in
the separate user manual M2-263-0.
Drawing
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Leica M Stereomicroscopes – Accessories