Description
Technical Manual (TM 9-1240-248-35P) for M44 and M44C Infinity Sights January 1970 FSN 1240-611-6492
This Technical Manual TM 9-1240-248-35P covers the M44 and M44C Infinity Sights and is dated January 1970.
The publication is a direct-support, general-support, and depot-maintenance repair-parts and special-tools reference for these armored-vehicle fire-control sights.
Historical Significance
The M44 and M44C belonged to the Cold War generation of integrated armored-vehicle fire-control optics. These similar infinity sights projected an illuminated aiming reference into a compatible gunner's periscope, providing a unity-power sighting channel for rapid target acquisition and auxiliary aiming.
An infinity sight places the aiming image optically at infinity, allowing the reticle and a distant target to appear in focus together. In service, the M44 and M44C complemented the magnified channels of their associated periscopes and supported close-range engagement with the vehicle's coaxial machine gun.
Equipment Applications
The M44 Infinity Sight, identified by FSN 1240-611-6492, was associated with the M29 gunner's periscope used in the M103A1 heavy tank fire-control system. The related M44C, identified by FSN 1240-676-2181, was paired with the M31 periscope used in the M60-series tank fire-control system.
These pairings make the publication relevant not only as an optical-parts reference, but also as supporting documentation for the sighting arrangements used in two important generations of U.S. Army tanks.
What This Manual Covers
As a -35P repair-parts and special-tools publication, TM 9-1240-248-35P supports component identification, stock-number and reference-number lookup, requisitioning, and maintenance planning for the M44 and M44C Infinity Sights at direct-support, general-support, and depot levels.
The manual documents the Army supply and maintenance structure behind the sights, helping users relate assemblies and repair parts to the correct sight model and maintenance level.
Key Features
- Official publication number: TM 9-1240-248-35P
- Publication date: January 1970
- Equipment covered:
- M44 Infinity Sight - FSN 1240-611-6492
- M44C Infinity Sight - FSN 1240-676-2181
- Maintenance scope: direct support, general support, and depot repair parts and special tools
- Fire-control context: M29 and M31 gunner's periscope sighting systems
Why This Manual Matters
This publication preserves the official nomenclature, model distinctions, stock numbers, and maintenance-supply information needed to identify parts for two closely related infinity sights. That makes it especially useful when loose components or incomplete sight assemblies must be matched to the correct application.
It also provides focused documentation for researchers and restorers studying the auxiliary sighting systems of the M103A1 and M60-series tanks.
About This Manual
Published by the Department of the Army in January 1970, TM 9-1240-248-35P is a repair-parts and special-tools publication for the M44 and M44C Infinity Sights. This later issue uses the direct-support, general-support, and depot-maintenance terminology then applied to Army maintenance publications.
It is distinct from TM 9-1240-248-35, the maintenance manual covering repair procedures for the M44 and M44C sights.
Ideal For
This manual is a strong fit for:
- U.S. Army technical-manual collectors
- M103A1 and M60-series tank researchers
- Military optical and fire-control equipment specialists
- Museum and restoration reference libraries
- Collectors identifying M44 or M44C sight components
Approx length 8", Approx width 11", Approx height .15", Approx weight .2lbs.
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.
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