Leica MZ125, MZ16 A, MS5, MZ6, MZ95 Drawing tube, Discussion tube, Move the lever to the black spot

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.

Drawing ￿ 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.

Leica M Stereomicroscopes – Accessories 51