Description
Technical Manual Change 1 (TM 9-1240-258-34) for M17A1, M17B1C, and M17C Fire Control Range Finders February 1963
This Change 1 update to Technical Manual TM 9-1240-258-34 applies to the M17A1, M17B1C, and M17C fire control range finders and is dated February 1963.
The publication supplements the original TM 9-1240-258-34, issued on July 1, 1960. It is a change publication and not the complete base manual.
Historical Significance
The M17-series range finders were part of the optical and mechanical fire-control systems used on U.S. tanks during the early Cold War. These instruments determined target distance and supplied range information for the tank's fire-control process.
The July 1960 base manual documented field-maintenance support for this equipment. The February 1963 Change 1 update records how the Army revised that technical guidance after the original publication entered service.
Change 1 and the July 1960 Base Manual
The original Technical Manual TM 9-1240-258-34 was issued on July 1, 1960. Change 1, dated February 1963, updated portions of that publication while leaving the base manual as the primary reference.
This relationship makes the change useful for maintaining a period manual set and studying the revision history of Army fire-control maintenance instructions.
What This Manual Covers
Change 1 provides dated amendments to TM 9-1240-258-34 for field-maintenance work involving the M17A1, M17B1C, and M17C fire control range finders. It supplements selected portions of the July 1, 1960 base manual rather than repeating the complete publication.
The documented range finders measured target distance as part of a tank fire-control system. That range information supported the calculations and settings used to lay the main gun.
Key Features
- Publication number: TM 9-1240-258-34
- Revision: Change 1
- Change date: February 1963
- Original manual issue date: July 1, 1960
- Equipment: M17A1, M17B1C, and M17C fire control range finders
- Publication type: U.S. Army field-maintenance manual change
Why This Manual Matters
This change helps bring a July 1960 TM 9-1240-258-34 reference set forward to its February 1963 revision status. It also gives collectors and researchers a focused record of maintenance-document updates for the M17 range-finder family.
About This Manual
This item is Change 1 to Technical Manual TM 9-1240-258-34, dated February 1963. It concerns the M17A1, M17B1C, and M17C fire control range finders and updates the original manual issued on July 1, 1960. This change is not the complete base manual.
Ideal For
This publication is a strong fit for:
- U.S. military technical-manual collectors
- M48 and M60 tank fire-control researchers
- Military museums and reference libraries
- Armor restoration and historical research projects
- Cold War fire-control equipment displays
Approx length 8", Approx width 10", Approx height .1", Approx weight .1lbs.
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