Description
Technical Manual Reprint (TM 9-1240-271-35) for M118 Periscope Mount June 1964 FSN 1240-796-9686
This Technical Manual Reprint TM 9-1240-271-35 covers the M118 Periscope Mount, FSN 1240-796-9686, and is dated June 1964. The publication is identified as a direct support, general support, and depot maintenance manual.
The M118 was part of a tank fire-control sighting arrangement and provided the mounting interface for the gunner's periscope. This maintenance reference preserves Army technical information for servicing the mount at support and depot levels.
Historical Significance
The M118 Periscope Mount supported the armored-vehicle sighting equipment used by the gunner. Its role made secure mounting and proper alignment important to the operation of the associated periscope and the broader fire-control system.
Army maintenance literature continued to identify the M118 in later tank support documentation, including procedures associated with the M32 gunner's periscope. Maintenance instructions direct attention to the M118 mount when the associated periscope cannot be properly boresighted, reflecting the mount's importance to sight alignment and stability.
What This Manual Covers
TM 9-1240-271-35 is the Army's direct support, general support, and depot maintenance publication for the M118 Periscope Mount. Its scope is focused on maintenance of the mount rather than operator-level instruction for the complete vehicle or periscope system.
This reprint incorporates current pages from Change 1. The cover also states that applicable pen-and-ink changes are listed.
- Support- and depot-level maintenance reference for the M118 Periscope Mount
- Identification of the mount by FSN 1240-796-9686
- Technical context for a mount used with gunner's periscope equipment
- Change 1 current pages incorporated into the reprinted copy
Key Features
- Publication: TM 9-1240-271-35
- Equipment: Mount, Periscope M118
- Federal Stock Number: 1240-796-9686
- Publication date: June 1964
- Maintenance level: Direct support, general support, and depot maintenance
- Physical format: Official Reprint with current pages from Change 1
- Associated equipment: M32 gunner's periscope applications
Why This Manual Matters
The M118 is a specialized component whose purpose can be difficult to reconstruct from general vehicle manuals alone. This publication gives restorers, researchers, and maintainers a dedicated Army reference centered on the mount and its support-level maintenance.
For collections focused on American armored vehicles, optical instruments, or fire-control systems, the manual adds component-level documentation that complements broader tank and periscope publications.
About This Manual
This item is a reprint of Department of the Army Technical Manual TM 9-1240-271-35, dated June 1964. The photographed cover identifies it as a reprint containing current pages from Change 1 and notes that pen-and-ink changes to be made are listed.
The publication concerns the M118 Periscope Mount under FSN 1240-796-9686 and carries direct support, general support, and depot maintenance scope.
Ideal For
This manual is a strong fit for:
- Military technical-manual collectors
- U.S. armored-vehicle restorers and researchers
- Tank fire-control and optical-system specialists
- Museum and reference libraries
- Collectors of M118 and M32 periscope documentation
Approx length 8", Approx width 10", Approx height .25", Approx weight .5lbs.
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