TM 9-1575 - Ordnance Maintenance - Wrist Watches, Pocket Watches, Stop Watches, and Clocks

Oct 29, 2026

Upload by Asher

TM 9-1575, Ordnance Maintenance, provides detailed guidance for ordnance maintenance personnel on inspecting, disassembling, assembling, maintaining, and repairing military timepieces. Coverage includes pocket watches, wrist watches, stop watches, and message center clocks, along with scope, operational purpose, and item characteristics. It explains manufacturing and authorized case types, standardized sizes, and distinctions among timing instruments and recorder terminology, including specific notes on message center clock construction and markings used for identification.

LanguageEnglish

CategoryResearch & Report

FormatPDF

Pages227

Reading Time9 h 32 min

AccessFree to download

CHAPTER 1. GENERAL

I. Introduction

II. Functional description

III. Inspection

IV. General maintenance

V. Cleaning and lubricating

VI. Trouble shooting, adjustment, and repair

CHAPTER 2. PoCKET AND WRIST WATCHES

I. Characteristics of pocket and wrist watches

II. Hamilton pocket watch, 16 size, 21-jewel, railroad grade, model 992B

III. Elgin pocket watch, 16 size, 7- or 17-jewel

IV. Waltham pocket watch, 9- or 17-jewel

V. Hamilton wrist watch, 6/0 size, 17-jewel, model 987A

VI. Elgin wrist watch, 8/0 size, 7- or 15-jewel

VII. Waltham wrist watch, 6/0 size, 9-jewel, model 10609 and 6/0 size, 17-jewel, model 10617

VIII. Bulova wrist watch, model 10 AK, 101/2 ligne size, 15-jewel, waterproof case

CHAPTER 3. ELGIN STOP WATCHES

I. Characteristics of Elgin stop watches

II. Trouble shooting, adjustment, and repair of stop watch

III. Elgin stop watches, type B, class 15

CHAPTER 4. MESSAGE CENTER CLOCK M1

CHAPTER 5. REFERENCES

INDEX

ORDNANCE MAINTENANCE WRIST WATCHES,POCKET WATCHES,STOP WATCHES,AND CLOCKS WRIST WATCHES,POCKET WATCHES,STOP WATCHES,AND CLOCKS 6 APRIL 1945 WAR DEPARTMENT TM 9-1575,Ordnance Maintenance:Wrist Watches,PocketWatches,Stop Watches,and Clocks,is published for the informationand guidance of all concerned. BY ORDER OF THE SECRETARY OF WAR: G.C.MARSHALL,Chief of Staff. OFFICIAL: J.A.ULIO, Major General,The Adjutant General. DISTRIBUTION:AAF(10);AGF(10);ASF(2);S Div ASF(1);Dept(10);AAF Comd(2);Arm &Sv Bd(2);TechSv(2);SvC(10);PC&S(1);PE,9(5);Dist O,9 (5);Dist Br O,9(3);Reg O,9(3);Establishment,9(5);Decentralized Sub-0,9(3);Gen &Sp Sv Sch(10);USMA(20);A(10);CHQ(10);D(2);AF (2);T/O &E:9-7(3);9-8(3);9-57(3);9-76(2);9-318(3). (For explanation of symbols,see FM 21-6.) CONTENTS Paragraphs Page CHAPTER 1. GENERAL………………………………………………1-441-83 SECTION I. Introduction…………………………………………1-41-3 II. Functional description………………………5-113-19 III. Inspection……………………………………………12-1420-22 IV. General maintenance …………………………15-1623-39 V. Cleaning and lubricating…………………17-1840-43 VI. Trouble shooting, adjustment, and repair …………………………………………………19-4444-83 CHAPTER 2. PoCKET AND WRIST WATCHES……45-6884-183 SECTION I. Characteristics of pocket and wrist watches …………………………………………4584 II. Hamilton pocket watch,16 size, 21-jewel, railroad grade, model 992B………………………………………………………46-4884-103 III. Elgin pocket watch, 16 size,7- or 17-jewel………………………………………………49-51103-117 IV. Waltham pocket watch, 9- or 17- jewel………………………………………………………52-54118-131 V. Hamilton wrist watch,6/0 size,17- jewel, model 987A…………………………55-57131-141 VI. Elgin wrist watch,8/0 size,7- or 15-jewel……………………………………………58-62141-158 VII. Waltham wrist watch, 6/0 size,9- jewel, model 10609 and 6/0 size, 17-jewel, model 10617…………………63-65158-169 VIII. Bulova wrist watch, model 10 AK, 101/2 ligne size, 15-jewel, water- proof case ………………………………………………66-68169-183 CHAPTER 3.ELGIN STOP WATCHES ……………………69-74184-196 SECTION I. Characteristics of Elgin stop watches 69-70 184-185 II. Trouble shooting, adjustment, and repair of stop watch………………………71185-187 III. Elgin stop watches, type B, class 15 72-74 188-196 CHAPTER 4. MESSAGE CENTER CLOCK M1……………75-77197-215 CHAPTER 5. REFERENCES……………………………………………78-80216 INDEX……………………………………………………………………………………………217-222 TM 9-1575 0RDNANCE MAINTENANCE-WRIST WATCHES,POCKET WATCHES,STOP WATCHES,AND CLOCKS RA PD 77447 Figure 1-Pocket Watch With Ordnance Markings RA PD 77421 Figure 2-Diameter of Pillar Plate of a Watch CHAPTER 1 GENERAL Section I INTRODUCTION # 1. SCOPE.* a.This manual is published for the information and guidance ofordnance maintenance personnel.It contains detailed instructions forinspection,disassembly,assembly,maintenance,and repair of pocketwatches,wrist watches,stop watches,and message center clocks,andis supplementary to those in the Field Manuals and Technical Man-uals prepared for the using arms.This manual does not contain in-formation which is intended primarily for the using arms,since suchinformation is available to ordnance maintenance personnel inTM 9-575. # 2. CHARACTERISTICS. a.The materiel covered in the manual consists of military time-pieces issued to the using arms and services for timing operations. b. Pocket Watches.Pocket watches are of American manufac-ture.All pocket watches are of the open-face type.They are all 16size. c. Wrist Watches.Wrist watches are all of American manufac-ture.Several types of cases have been issued.Cup type,and screwbezel and back type had been issued,but now all wrist watches arebeing issued in the waterproof case.Standard sizes in use are 101/2ligne,6/0,and 8/0.Wrist watches are authorized for issue to allbranches of the service. d.Stop Watches.The term"stop-watch”or "time-intervalrecorder”is used interchangeably,to designate an instrument usedprimarily to indicate time intervals of minutes,

FAQs

What is the purpose and scope of TM 9-1575 for maintenance personnel?

TM 9-1575 is published to provide information and guidance for ordnance maintenance personnel, including instructions for inspection, disassembly, assembly, maintenance, and repair of specified military timepieces.

How are pocket watches and wrist watches described in the manual?

The manual states pocket watches are American-manufactured open-face types and are all 16 size. Wrist watches are American-manufactured and, while multiple case types existed, wrist watches are issued in a waterproof case with standard sizes of 101/2 ligne, 6/0, and 8/0.

What does the manual say about stop watches and time-interval recorders?

The manual explains that the terms “stop watch” and “time-interval recorder” are used interchangeably to designate instruments indicating time intervals of minutes, seconds, and fractions of a second, and that such instruments no longer function as ordinary timepieces for telling time.

Oct 29, 2026

Upload by Asher