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planes); aiming should be provided in the interior.

Exterior - The field of the sight should be cleared of all obstacles likely to interfere with aiming (wheels, axles, generators, bomb-racks, etc.), in a field from 75 0 forward and 10 0 backward.

The bomb-rack controls should be placed in easy reach of the bomber while operating the sights.

Interior - The sight should be placed in the front part of the cock-pit on bimotors. It will have a field of fire provided for in the preceding paragraph on the bomber's visibility. It will be placed in such manner that it may be used without trouble by the bomber. An articulated device should fold it down when not in use, clearing the position of the bomber. The bomb-rack controls should be in reach of the hand during sighting, preferable at the right. The sighting hole should be capable of being cleared entirely of all transparent substance for aiming at night.

2. From the point of view of bomb-racks.

All airplanes should be designed in conformance with specifications, using standardized bomb-racks determined upon by the Technical Section.

These bomb-racks differ according to the nature of the

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