N-3C Gun Sight Reflector Glass Dimensions

[VintageIron]

Hello and thanks for taking time to read this.

Does anyone know the dimensions of the reflector glass for the N-3C gunsight? I would also be interested in new old stock, or accurate reproduction glass, or, as the title says, dimensions so I can make my own.

Thank you!

 

[cvairwerks]

If you have the glass holder, should be pretty easy to scale it from here:

AIRCRAFT GUNSIGHT HEAD EARLY WW2 TURRET B-24 B-25 ? | #25469725

Very nice N3B body with rare early war sight head. This one has replacement glass and replaced cross bars (the original rusted off). I have never seen this short variation. It was probably used on the

www.worthpoint.com

 

[VintageIron]

If you have the glass holder, should be pretty easy to scale it from here:

AIRCRAFT GUNSIGHT HEAD EARLY WW2 TURRET B-24 B-25 ? | #25469725

Very nice N3B body with rare early war sight head. This one has replacement glass and replaced cross bars (the original rusted off). I have never seen this short variation. It was probably used on the

www.worthpoint.com

Thanks for your reply, I have an N-3C gunsight body, but don't have the sight hood that holds the glass. I'm a machinist toolmaker, and have the dimensions for the sight reflector hood, but the details for the glass are omitted from the drawing I found. I do know the drawing numbers that were on the data plate of the sight, do you know if that information would be in the National Archives?

 

[MIflyer]

This might help. It is from Aviation Archives