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Image:511a sweep.png | Image:511a sweep.png | ||
File:Septad511.jpg|511 Ad from September 1948 | File:Septad511.jpg|511 Ad from September 1948 | ||
Tek 511ad 1.jpg|511AD | |||
Tek 511ad 2.jpg|511AD | |||
Tek 511ad 3.jpg|511AD | |||
Tek 511_ad4.jpg|511AD | |||
</gallery> | </gallery> | ||
[[Category:Monolithic tube scopes]] | [[Category:Monolithic tube scopes]] |