American aircraft gun sight question

[OldGeezer]

I'm looking for info on something called a "L.A.B. 211C-5-26" gun sight that I noticed on a mid-WW2 drawing for an US Army plane but I can't find out anything about it. The drawing isn't the best quality, the "C" might be a "G" or even an "O" or a "U" or a "0".

 

[mjfur]

Those numbers may just be the manufacturers part numbers and not associated with the AAF model number.
Can we see the drawing? What kind of plane was it? A bit more info. would help.

 

[Airframes]

Could the "L.A.B." possibly be an erroneous presentation of "B & L", Bausch and Lomb ?

 

[MiTasol]

LAB sounds like the company spec for a standard part which some companies used.

I am guessing Lockheed Aircraft Burbank as Lockheed gave all AN rivets and plumbing and other standard parts Lockheed numbers - usually LS numbers but I have seen other prefixes.

If you identify the aircraft make, model and submodel members can probably identify the sight

 

[ThomasP]

There was a research lab know as the "L.A.B." in New Jersey during WWII. I am not sure who was responsible for the facility, but I think it was either a GE or an Edison plant (I believe they were part of the same corporation by WWII?). This L.A.B. was given responsibility for the development of the N-7 reflector gunsight (a detail improved N-3) around 1942. I think it also aided in the adaptation/development of the US variant of the UK GGS Mk IIC gyro gunsight.

 

[OldGeezer]

Sorry all, been off trying to make a part for my old car - whole separate set of problems. The aircraft in question for the gunsight is an early McDonnell Aircraft Company product, not Lockheed. I like the info on the L.A.B. / N-7 connection, I'll try to chase that down a bit. Thanks!