What is the metal saddle or bridge like device where the strings are strung thru on my old Kent acoustic guitar? I've searched for the answer in anatomy and am not able to find the answer anywhere

like a dobro has at bottom but it's on this old Kent acoustic I'm working on for my nephew

i wanted to upload a pic maybe I can to show you

I need the bane so I can see how to place it straight with fretboard or slightly angled etc