Picotest M3500A User Manual page 18

【Step 2】
Open the voltage setting selector cap as shown in Figure 2-2. (You
might need a screwdriver to do so.)
【Step 3】
Remove the red voltage setting selector from the right middle seam as
shown in Figure 2-3. (You might need a screwdriver to do so.)
Figure 2-1
Figure 2-2
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