Miniatures are often a very creative and useful way of helping your players visualize the scene you lay out before them.
The Terminator RPG is NOT designed to be a miniatures Game, so don’t bother looking for scaling information in the game. Having said that, it CAN be done.
The greatest challenge is finding the miniatures you need. You can, of course, visit your local gaming stores for advice on Designing, Printing, Priming, Painting, and Finishing.
There are also a few Designers out there who have tried their hands at making minis and many are quite good.
You can also get them from the Terminator Genisys strategy game, although I prefer a somewhat larger surface to paint on and really make the figures stand out.
This is where to go if you’re looking for answers.
As time goes on, this will become a professional quality miniatures section that allows you to learn from everyone.