How do I force a sprite to retain it's size and not scale

Is it possible to have a sprite retain its absolute size regardless of the size of the window?

An example would be a button that needs to be 50x50 pixels regardless if it's on a phone, desktop, or movie theatre.

If there is nothing native, is there a way to add or subtract the difference in scale compared to a layer? Something like, if layerscale > 100% -> sprite scale = sprite scale - ( layerscale - 100% )

Every tick set sprite size to (50*OriginalWindowWidth/WindowWidth, 50*OriginalWindowHeight/WindowHeight)

sweet thanks!