Ok, you followed my blog post and got them into sheet cam.
https://forgetool.blogspot.com/2020/04/you-just-bought-my-tong-halves-dxf-file.html
How do you verify they are the right size.
Click Zoom-> Grid Options, and set the x and y size to .125"
Then you zoom all the way in on the tip of the flat jaw tong
Nope further than that, ALL the way in...
Yes now that's the ticket.
Look at the dots, It's not aligned perfectly, but you can tell it's 9 dots tall, so it's imported at the correct size.9* 1/8" = 1-1/8" the correct size for the tong tip