u/Jumpy-Ad-7379

Hello,

i am searching for ways to measure distances between 4 points in mm (rectancgle) accuracy even if there is metal in +-10cm gap or even through metal. I have seen some interesting papers that mentioned UWB in mm accuracy but this does not work once metal objects are nearby. I do not want to take lasers or cameras. Maybe you have some ideas, would appreciate some ideas that i could validate.