MIL-PRF-46374G
3.4.3 Hand adjustment.
3.4.3.1 Hand setting. The minute hand shall not rotate (jump) at its tip, more than one tip width
when the crown is moved from the setting position to the "winding" position after setting the
hands.
3.4.3.2 Second hand stop mechanism. Pulling the stem, by means of the crown, to the setting
position shall result in stopping the movement. Rotation of the stem, by turning the crown, shall
permit the minute and hour hands to be advanced without any movement of the second hand.
Depressing the stem, by pushing the crown, shall result in complete operation of the movement
and hands. When the stem is pushed in, the watch shall start immediately.
3.4.4 Elapsed time ring, type III. There shall be an elapsed time ring concentric with the axis of
the watch. The elapsed time ring shall be designed to assure that the outer edge (shoulder) of the
crystal is recessed within the elapsed time ring. The background of the elapsed time ring shall be
the same shade of black as the background of the dial. The numbers and graduations shall be the
same shade of white as that on the dial. Around the ring there shall be 12 hour marks equally
spaced around the dial. Except for the number 12, all the marks shall be numerals starting with 1
and progressing clockwise to 11. The number 12 shall be replaced by a luminous mark. Between
the 12 o'clock and 1 o'clock, 1 o'clock and 2 o'clock, 2 o'clock and 3 o'clock, and the 3 o'clock
and 4 o'clock marks, there shall be four equally spaced minute marks. The periphery of the
elapsed time ring shall be made rough by checkering, knurling, serrating or any method that shall
facilitate the turning of the ring. The elapsed time ring shall move only when a torque of 180 ± 40
mNm (26 ± 6 inch-ounces) is applied both in the clockwise and counterclockwise directions. The
elapsed time ring shall be capable of withstanding, without damage, two forces, each of 44.5 ± 2
N (10 ± 1/2 pounds), applied to the lower side of the elapsed time ring with the 12 o'clock
luminous mark at the 3 o'clock position.
3.4.5 Case bars, types II and III. A watch strap shall be attached to the watch case at both ends
by means of integral bars or removable spring bars. A static pull of 67 ± 2 N (15 ± 1/2 pounds)
on the watch strap from each end of the case shall cause no damage.
3.4.6 Crystal strength. Crystals, that have been assembled to the case and that have been
subjected to the storage environment of table I, shall be visually inspected and tested for strength.
When visually inspected, the crystals shall be transparent, uncolored, and free from bubbles, striae,
scratches, chips or other imperfections that may interfere with reading the watch. When
functionally tested, the crystal shall show no visible damage of cracking or chipping.
3.4.7 Strap. The strap color shall be black.
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