American Mil-Spec: A GG-W-113 Pilot Watch Buyers Guide
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Introduction
Since the beginning of modern warfare, the U.S. government has utilized private manufacturing for the production of its vehicles, equipment and weapons. The watches the government issued to its troops were no exception. Instead of producing their own, the U.S. government generally provided a specification that was dutifully followed by its contractors.
Enter the GG-W-113. One of the U.S. government’s longest running specifications, this document detailed the design and efficacy requirements for the wrist watch issued to its military pilots. Issued on June 6th, 1967, this specification highlighted the U.S. military?s need for a legible, accurate, and durable timepiece for use in active combat situations.
GG-W-113 Government Specifications As you might expect, reading the entire GG-W-113 specification can be a bit dry. It?s a terse document full of technical standards and testing procedures. If you?re into that, go ahead and knock yourself out here, otherwise here is the summary:
A mechanical movement with an accuracy of +- 30 seconds per day
15 Jewels
A hacking mechanism
Shock resistance (must survive a fall from 4 feet onto a wooden block)
Waterproofness
Luminous Hands (using Tritium)
Antimagnetic
Minimum of 36 hour power reserve
These are pretty standard requirements for a military watch, however the specification also includes detailed schematics for the dial and case design, with a bit of creative allowance.
These watches were produce...
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