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Section III-F: Slit Width Adjustments in the Model 716 Bilateral Slits
The slit width of each bilateral slit assembly (716 type) is adjustable from 0.010 millimeters to 3 millimeters (10
to 3,000 µm) by a micrometer knob located on the top of the slit housing. The micrometer knob is graduated in
0.010 millimeter (10 µm) increments.
Each clockwise revolution of the micrometer knob increases the slit width 0.25 millimeters (250 µm). For
maximum reproducibility, the slit width should be set in a clockwise direction (increasing slit widths) each time it
is changed. Refer to the drawing below.
The micrometer knob should not be rotated below a reading of 0.00 or above 3.00. A micrometer setting of less
than 0.010 millimeters (10 µm) should not be used, because a stop is provided to prevent the slit jaws from
contacting each other.
Note: Damage May Be Done If Slit Jaws Are Opened Wider Than 3.0 mm.
Slit Width Micrometer Settings
Slit Width Adjustable from
10 Micrometers to 3000 Micrometers (3 mm)
Figure 7. Slit Width Setting:
200 Micrometers (0.200 mm)
Figure 8. Slit Width Setting:
1380 Micrometers (1.38 mm)