American Aimers B4A - Manual (Page 19)

B4A manual page 19 Page 1 of 1
http://www.hopkinsmfg.com/test2/b4a_manual_page_19.htm 8/13/99
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B4A Instruction Manual
Page 19
First locate the relative position of the bubble to the outside vial line (Fig. 8). Then, with the aimer attached to the
table top, rotate the unit 180 degrees to determine a second position for the bubble (Fig. 8).
If the bubble is in the same relative position in both instances, the unit is in calibration. If not, the adjusting screw
should be turned (use 1/8" slot screwdriver) until the same relative position is achieved with the aimer in both
positions.
Calibration must be accomplished with the bubble free to move and not at an extreme end of the vial.
HEADLAMP CONFIGURATIONS
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