User's Manual

MIL-PRF-46374G
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6.1.2 Type selection criteria. The following criteria is a guide for watch type selection to match
user requirements:
Type I: Analog, short life (2 years), non-maintainable, antimagnetic, water-resistant
Type II: Analog, long life (5-10 years), maintainable, antimagnetic, water-resistant, high
altitude, corrosion-resistant
Type III: Analog, long life (5-10 years), maintainable, antimagnetic, water-resistant, high
altitude, corrosion-resistant, with elapsed time ring
6.2 Acquisition requirements. Acquisition documents should specify the following:
a. Title, number, and date of this specification
b. Type, class, and color of watch required (see 1.2)
c. Unit and quantity required
d. Issue of DoDISS to be cited in the solicitation, and if required, the specific issue of
individual documents referenced (see 2.2)
e. Case finish and color (see 3.4.9.2)
f. Packaging requirements (see 5.1)
6.3 Qualification. With respect to products requiring qualification, awards will be made only for
such products which, at the time of award of contract, have been tested and approved for
inclusion on the applicable qualified products list whether or not such products have actually been
so listed by that date. The attention of the suppliers is called to this requirement, and
manufacturers are urged to arrange to have the products that they propose to offer to the Federal
Government tested for qualification in order that they may be eligible to be awarded contracts or
orders for the products covered by this specification. The activity responsible for the qualified
products list is the U.S. Army Armament Research, Development and Engineering Center, Attn:
AMSTA-AR-QAW (B-12), Picatinny Arsenal, New Jersey 07806-5000. Information pertaining
to qualification of products may be obtained from that activity (see 3.1, 4.3.1, and 4.6.5.1).
6.4 Definitions.
a. Accuracy error notation. Where algebraic signs are used to denote the direction of
timekeeping accuracy error, the plus (+) sign represents “fast” and the minus (-) sign “slow”.
b. Daily rate. Rate in a 24 hour period. The term “daily rate” is used synonymously with the
terms “daily error” and “daily accuracy”.
c. Mean daily rate. The arithmetic average of individual daily rates (daily errors) with proper
regard to algebraic signs in the summation. Unless otherwise specified, the mean daily rate will be
based on 3 consecutive days operation.
d. Error. Algebraic time difference in seconds between the watch being tested and the
master timepiece.