MIL-DTL-17896E
calibration within 0.05 inch at any point on the scales. The change in calibration for the second
six-month period shall not exceed 0.03 inch due to the aging process.
3.12 Marking. The letters shall be of such size as to be easily readable and neat in appearance.
3.12.1 Dial. The following shall be imbedded above the center of the dial, for the
identification of the scale to which it applies:
INCHES OF MERCURY
MILLIBARS
The following shall be imbedded below the center of the dial:
U.S. GOVERNMENT
3.12.2 Case. The following information shall be molded or embedded in clear legible
gothic characters on the case or placed on an identification plate, which shall be attached to the case:
BAROMETER, ANEROID TYPE
NAVY DEPT., NAVSEASYSCOM
MANUFACTURER
MANUFACTURER TYPE NO.
(optional)
CONTRACT NO.
NATIONAL STOCK NUMBER
YEAR OF MANUFACTURER
U.S.A.
3.12.3 Identification plate. The identification plate shall be of such material and construction
that will identify the barometer through its useful service life and shall be marked as follows:
CAUTION
THE INTENDED USE OF BAROMETERS MAKE IT MANDATORY THAT
MATERIAL FURNISHED SHALL CONTAIN NO METALLIC MERCURY AND
SHALL BE FREE FROM MERCURY CONTAMINATION.
4. VERIFICATION
4.1 Classification of inspection. The inspection requirements specified herein are
classified as follows:
a. First article inspection (see 4.2).
b. Conformance inspection (see 4.3).
4.2 Inspection conditions. Unless otherwise specified in the contract or order, the
instrument shall be tested in an upright vertical wall mounting position and shall be lightly tapped or
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