User:TeeTylerToe/sandbox9
Mil-W-3818 is a US Military specification for a wristwatch. October 17 1962 Mil-W-3818A was superceded by the release of Mil-W-3818B.[1] Mil-W-3818B
The purpose of revision B was to simplify the watch inventory, reduce the delay imposed by testing requirements, and add a new case design. Revision B was intended to hold the specifications for a 17 jewel watch with +- 30 second accuracy, a hacking mechanism, and a useful life of 2 years.Mil-W-3818 is a US Military specification for a wristwatch. October 17 1962 Mil-W-3818A was superceded by the release of Mil-W-3818B.[1]
Mil-W-3818A
[edit]March 1956[2] black face, stainless steel case & 18 jewels made by Benrus & Bulova among others it called for at least 15 jewels and a hacking movement.[3]
Mil-W-3818B
[edit]The purpose of revision B was to simplify the watch inventory, reduce the delay imposed by testing requirements, and add a new case design. Revision B was intended to hold the specifications for a 17 jewel watch with +- 30 second accuracy, a hacking mechanism, and a useful life of 2 years.[1] stem wound and set, a reserve of 36 a straight knurled with “dimple” of similar Benrus military watches the acrylic crystal is “copolymer plastic”.[1]
The 12 O'clock marker, a triangle, is luminescent yellow. The other hour indices luminescent green.. The hands are brass recycled from cartridges, painted white, with green luminescent paint applied; the second hand tip is luminescent orange. H3 Tritium is used as the luminous paint. They were marked "WRIST WATCH DTU-2 A/P[1]
The strap was to follow “Drawing C 8636227″ but on January 12, 1966 was amended to use black MIL-S-46383 Type II.[1]
Benrus Watch Co., Longines-Wittnauer Watch Co., Mathey-Tissot Watch Co. and later (1964) Clinton Watch Co. only Benrus successfully met the requirements for approval and was notified September 16, 1963 that it was now listed on the Qualified Products List. Febuary 2, 1964 the Marine Corps submitted a “Military Interdepartmental Purchase Request” for the purchase of 10,849 MIL-W-3818B watches. A request for proposal was issued to the Benrus Watch Co. on February 7, 1964, with a closing date of Feb. 24, 1964. Benrus quoted a unit price of $28.28.[1]
Finally the Bulova Watch Co. alleged that the Benrus imported the movements and cases, not meeting domestic production requirements, but Benrus’ submitted proposal detailed their import of the movement and dial setting, dial stem and springbars but the case, crown, attatchments, packaging material and jewel bearings were all domestic the costs of the domestic components were considerably in excess of 50 percent of the costs of all components meeting the requirement.[1]
References
[edit]- www.shinall.com/pdf/watch/MIL-W-3818B_Sepcifications.pdf
MIL-W-22176 Bulova 10BPCHN dive watch 17 jewel
3/24/ 61 MIL-W-22176A pubished (TR spec) [1961 MIL-W-22176A spec]
8/30/68 MoD standard 66-4(1) Issue 1 published (spec for Omega, Rolex, etc RN divers) [1968 MoD 66-4(1) Issue 1]
DEF-STAN 66-4 (Part 2) included a small but significant change from its first issue in April 1969 to its second issue in April 1970. The latter changed the standard to allow for pilot’s chronograph cases to feature either one or two “pushpieces,” or buttons, to control the watch’s chronograph function. That change allowed for manufactures to use the Valjoux 7733 movement we’ll discuss below. It also balanced the case vertically in a way that it was not before, placing one button on top and one below the crown.