A-A-53432
Sampling for tests. Sampling for test shall be conducted in accordance with commercial practice. The unit of product for test purposes shall be one test set.
A. First article. Where a first article sample is required, all tests shall be performed on that unit.
B. Acceptance testing. When a first article sample has not been required, one unit shall be subjected to all tests specified herein. If a first article sample has successfully passed all tests, performance tests shall not be required.
Tests. Tests shall be conducted to determine compliance with specification requirements. Where feasible, the same sample shall be used for one or more tests.
Performance tests. The filter assembly shall be placed in the flashlight as indicated in fig.1. Two fresh batteries (size D) shall be inserted in the flashlight case. With the examiner wearing the spectacles and the flashlight turned on, the filter assembly shall be viewed from a distance of approximately 13 inches. The first observation shall be made with both eyes open; the second observation shall be made through the red filter of the spectacles only (by closing the eye with the green filter); the third observation shall be made through the green filter of the spectacles only (by closing the eye with the red filter). The test shall be performed by a person having normal binocular.
Performance. When tested as specified, the following observations shall be made:
(1) When viewing through both filters of the spectacles, the four dots shall be visible.
(2) When viewing through the red filter of the spectacles only, two dots shall be visible (one white and one red).
(3) When viewing through the green filter of the spectacles only, two dots shall be visible (one white and one red).
Contractor certification. The contractor shall certify that the product offered meets the salient characteristics of this description and conforms to the producers’ own drawings, specifications, standards, and quality assurance practices. The Government reserves the right to require proof of such conformance prior to first delivery and thereafter as may be otherwise provided for under the provisions of the contract.
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