Description
Technical Manual Change 1 (TM 9-1240-274-34) for M117/T177 Panoramic Telescope February 1967 FSN 1240-864-2930
This Technical Manual Change 1 for TM 9-1240-274-34 updates the field-maintenance manual for the M117/T177 Panoramic Telescope, FSN 1240-864-2930, and is dated February 1967.
Change 1 applies to the original TM 9-1240-274-34 issued on January 14, 1963. It is an official update notice intended for use with that base manual, not a complete copy of the original publication.
Historical Significance
The M117 panoramic telescope was part of the fire-control equipment used with the M108 105 mm and M109 155 mm self-propelled howitzers. Mounted on the M145/T208 Telescope Mount, it supplied the azimuth measurements used to lay the weapon for indirect fire.
Change notices allowed the Army to keep technical publications current without replacing the entire manual. This February 1967 notice records an official update to the maintenance documentation supporting the M117 during the 1960s.
What This Manual Covers
This publication contains the official Change 1 update applicable to TM 9-1240-274-34. It carries revised information for the M117/T177 Panoramic Telescope field-maintenance manual as of February 1967.
The notice does not replace the full January 1963 base manual. Its purpose is to amend that publication so the updated material can be used with the original maintenance instructions.
Key Features
- Publication: TM 9-1240-274-34
- Change number: Change 1
- Change date: February 1967
- Base-manual date: January 14, 1963
- Equipment: M117/T177 Panoramic Telescope
- Federal Stock Number: 1240-864-2930
- Physical publication type: Official technical-manual change notice
- Issuing authority: Department of the Army
Why This Manual Matters
An official change notice documents how the Army revised a technical manual during its service life. It helps complete a publication set and preserves the update history associated with the M117 maintenance manual.
The notice is useful for collections focused on M108 and M109 fire-control equipment, panoramic telescopes, or the development of Army maintenance documentation.
About This Manual
This item is Change 1 for Department of the Army Technical Manual TM 9-1240-274-34. The change is dated February 1967 and applies to the M117/T177 Panoramic Telescope under FSN 1240-864-2930.
This change notice is not the complete base manual. The original TM 9-1240-274-34 was issued on January 14, 1963, and is required for the full field-maintenance publication.
Ideal For
This change notice is a strong fit for:
- Military technical-manual collectors
- Owners of the January 1963 base manual
- M108 and M109 restoration researchers
- Fire-control and optical-system specialists
- Museum and technical-reference libraries
Approx length 8", Approx width 10", Approx height .15", Approx weight .2lbs.
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