The case is 50 mm in diameter and 254 mm long. This plastic case is fitted with a bayonet cap. In the lid is a foam rubber cup and at the base of the tube is a socket fitted in a foam rubber moulding with a heavy weight at the bottom. The sides of the case have fixing lugs and this suggests that the tubes would hang in a larger cabinet. The case is black and the camera tube has a black plastic hood over the light sensitive target.
 
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