Not my sphere of knowledge so I'm wondering if anyone on here can assist please? I've been searching the web without success to find the identity of what I am presuming is a gun director/predictor. But what make and model? I've come across various names and models but none that seem to resemble this one. Any firm knowledge of when these specific ones came in to use? From what I have read some basic predictors were around pre-war but I understand the better ones only came in to use later in to the war. Which category did this one fall in to? There is some question regarding the date of the photo and maybe identifying the various equipment might give a clue.