Hey man! Big fan of your stuff! Thank for posting this, it’s really helpful! Now if there was only a way for me to find out what the heck it is 
It’s a critter and guitari video scope!
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This is really embarrassing to even say, but I’ve had a critter and guitari video scope for a few years in a drawer, just never hooked it up! I decided to pop it open and sure enough it matches the photo that @nervous_squirrel posted!
Any idea what the small blue board to the left may be used for?
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Amazing, mystery solved!
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I think the blue board is just a voltage regulator thing.
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Thank you!
It’s a critter and guitari color video scope mounted sideways I believe. Mine is the b/w version unfortunately! I just got done trying it out and it’s pretty cool! Appreciate your help!
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Wow looks like a friggin museum up in there!
This made me wonder if it’d be too complicated to use one of those cheap backup camera screens (3-5 inch) and an analog circuit that converts the audio signal into a composite signal.