Description
Technical Manual TM 9-1220-206-35P for M15 and M15C Gun Direction Computers, July 1962
This Technical Manual TM 9-1220-206-35P covers the M15 and M15C Gun Direction Computers and is dated July 1962.
The publication is a repair-parts reference for personnel supporting these field artillery fire-control computers at field and depot maintenance levels.
Historical Significance
The M15 family marked an early Army move from manual gunnery methods to automated technical fire direction. The electromechanical analog M15 was standardized in 1958 and fielded in 1960 as part of the M35 Fire Control System.
The M15 was configured for the 105 mm howitzer, while the M15C supported the 155 mm howitzer. These computers received target, weapon, and observer coordinates, calculated deflection and quadrant elevation, determined fuze data, and transmitted technical fire-direction information to the firing battery.
What This Manual Covers
This -35P parts manual identifies repair parts and special tools used for field and depot maintenance of the M15 and M15C Gun Direction Computers. It supports parts identification, requisitioning, and maintenance planning for the two related computer models.
The documented computers belonged to the M35 and M35C Field Artillery Fire Control Systems. Their internal units converted mechanical fire-direction inputs into electrical values and output signals used in the automated computation and transmission of firing data.
Key Features
- Official publication number: TM 9-1220-206-35P
- Publication date: July 1962
- Equipment covered: M15 and M15C Gun Direction Computers
- Maintenance scope: field and depot repair parts and special tools
- System context: M35 and M35C Field Artillery Fire Control Systems
Why This Manual Matters
This publication preserves the Army parts terminology and maintenance organization used for an early generation of automated field artillery equipment. It is a focused reference for identifying components and understanding how the M15 and M15C were supported beyond the operator level.
It also complements broader histories of Army fire-direction technology by documenting the maintenance supply structure behind the M15 family.
About This Manual
Published by the Department of the Army in July 1962, TM 9-1220-206-35P is a field- and depot-maintenance repair-parts publication for the M15 and M15C Gun Direction Computers. It is distinct from TM 9-1220-206-12, the operation and organizational maintenance manual for the M15.
Ideal For
This manual is a strong fit for:
- U.S. Army technical-manual collectors
- Field artillery and fire-control equipment researchers
- Military museums and reference libraries
- Restoration projects involving M15 or M15C equipment
- Historians studying early automated artillery fire direction
Approx length 8", Approx width 10", Approx height .25", Approx weight 1lbs.
Pictures are stock images of our inventory. Unless otherwise noted, you will not be receiving the exact item shown in the pictures. The pictures are representative of the item's general condition. The item you receive might be slightly better, or worse, condition than was shown in the pictures.
Please visit our page about order lead times here: Order Lead Times