They’re not talking about zooming, hence the quotes.
Can you point me at one that can understand a detailed block diagram? Frontier is fine, soliciting recommendations
I tried to parse hand-drawn ER diagrams in the past and did not have much success with any model, frontier or otherwise. If you have annotated data, I'd recommend finetuning a recent (dense) VLM, but don't expect 100% accuracy. https://unsloth.ai/docs/basics/vision-fine-tuning
Ideally, look at second diagram and see something similar in the same location and understand it's the same physical object.