Won't start

It's a 71 Plymouth Scamp with 225 and the double-hockey puck sized thing on the top of the valve cover towards the back. I'd have to admit that the engine was not fully warmed up when I checked the vacuum reading. I ran the engine only long enough to set the timing and check the vacuum.

I think it's manifold vacuum to the distributor, but I'd have to look at it again. There's another blocked off line on the carb that I'm assuming is ported vacuum (higher up on the carb?), but it's the original carb. My mom bought the car new, so I'm fairly in tune (pun intended) with its history.