How to make same size objects at different distances show as same size?

I have a collection of objects which at this point are in two similar sized sets of objects, making obstensibly two “things” of the same size; when I allow the BGE to ROTATE them, I’d like the further thing to REMAIN the same size as the “near” one, because they’re both part of one “model”.

This may show what I mean:


The top view on the right show that the two structures are the same basic size, but through the camera the one further from the camera is smaller looking, and I’d like them to show at the same size.

Can I do that, & if so how?

Thats perspective, you know like the real world.
You can change the camera to an orthographic camera in its settings

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Heah, sigh, won’t be the last silly question I ask, thanks!