American Aimers B4A - Manual (Page 16)

B4A manual page 16 Page 1 of 1
http://www.hopkinsmfg.com/test2/b4a_manual_page_16.htm 8/13/99
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B4A Instruction Manual
Page 16
1. Attach OWNER'S CALIBRATION FIXTURES so that the level vial is at the top of each unit (Fig. 1).
2. Turn thumb adjusting screw on each OWNER'S CALIBRATION FIXTURE until it is approximately the same
distance as the supporting posts (Fig. 2).
3. Secure the aimers, with OWNER'S CALIBRATION FIXTURES attached to a reasonably vertical plate glass
window in the same manner as attaching the aimers to headlamps. The aimers should be spaced (3) to (5) feet
apart with targets visible through the viewing ports on the aimers (Fig. 3).
4. The FLOOR LEVEL DIAL on each aimer must be set at zero.
5. Rotate the thumb adjusting screws of OWNER'S CALIBRATION FIXTURES until the level vials on them are
centered.
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