Description
Technical Manual Change 1 (TM 9-1220-203-34) for M13, M13A1, M13A1C, M13A1D, M13A2, and M13B1C Ballistic Computers January 1964
This listing is for Change 1 to Technical Manual TM 9-1220-203-34, dated January 1964. It applies to the maintenance manual for the M13, M13A1, M13A1C, M13A1D, M13A2, and M13B1C ballistic computers.
Change 1 supplements the edition dated 31 January 1963. It should be kept with that base manual so the technical-manual set reflects the later Army update.
Historical Significance
This change notice comes from the Cold War period, when ballistic computers were part of U.S. Army fire-control maintenance programs. The covered M13-series models show how one manual family supported several related equipment configurations.
Military change notices are important records because they preserve revisions issued after a base manual was published. Keeping the change with the original edition helps document how official maintenance information was updated over time.
Change 1 and the Base Manual
This publication is a Change 1 update, not the complete base manual. It is intended for use with TM 9-1220-203-34 dated 31 January 1963. The exact changed pages and instructions should be confirmed from the physical copy.
What This Manual Covers
The change applies to the TM 9-1220-203-34 maintenance manual covering the following ballistic computer models:
- M13
- M13A1
- M13A1C
- M13A1D
- M13A2
- M13B1C
Key Features
- Change 1 to TM 9-1220-203-34
- Dated January 1964
- Updates the edition dated 31 January 1963
- Covers six listed M13-series ballistic computer models
- Supplemental change notice rather than the complete base manual
Why This Manual Matters
This change notice helps complete the publication history of TM 9-1220-203-34. It is useful for collectors and researchers who want the base manual together with its later official update.
As period technical documentation, it also supports research into Cold War Army fire-control equipment, maintenance publications, and revision control.
About This Manual
This listing is for Change 1 to TM 9-1220-203-34 only. It is not the complete 31 January 1963 base manual. No ballistic computer, test equipment, tools, parts, or other manuals are included unless specifically stated.
Ideal For
This manual is a strong fit for:
- U.S. Army technical manual collectors
- M13-series ballistic computer researchers
- Cold War fire-control reference collections
- Museums and military archives
- Collectors completing a TM 9-1220-203-34 manual set
Approx length 8", Approx width 10", Approx height .1", Approx weight .1lbs.
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