US Army Air Corp N-3B Sight Assy Fixed Gun Cannon Service Tool & Eng Co Reference

For all of you out there who own a 71 mm [2.375 in] diameter or larger bore cannon, here is a great required and useful item. It is a US Army Air Corps N-3B, Dwg No. 42G20092, Sight Assy, Fixed Gun, Assy Number:93-24817 surlus item. It was made by Service Tools & Engineering Co. and it is built into a sturdy aluminum has fine optical features. Easy to use. Nicely made precision optics, lenses and prism. For boresight alignement on cannons on the cheap, nostalgia, astronomy, show and tell, special projects, or to be used as a parts source, it is a nice item to have. Page is for reference only - Item is no longer available!
US Army Air Corp N-3B Sight Assembly Fixed Gun Cannon Service Tool & Engineering Co [5 KB]


N-3B Sight Assembly Fixed Gun
MFG: Service Tool & Engineering Co
For 71 MM Dia Cannon Bore Sighting
Uniform collimated illumination field
Precision optical elements - Lenses, prism
Assy No.: 93-24817 - Dwg No.: 42G20092
Built in special light bulb
Power: 12-28 V AC/DC approx.
Bendix style connector Two male pins
Heavy quality aluminum casting
Made for US Army Air Corp in USA
SIze: 130 H x 185 L x 72 W [inches] Weight: 971 [gram]


No longer Available
Data For Reference Only
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