Does anyone know any free Android apps for measuring objects without touching them? Or can trigonometry be used in it's place? Most apps I've found that can measure length, width, and height require some sort of payment or does a trial. I'm measuring the dimensions of garments that are being displayed behind glass and are elevated on a stand.
Since glass makes photogrammetry, difficult (taking hundreds of photos and using them to generate a 3D model) one thing that may work is to use AI and generate a NeRF (Neural Radiance Field) of the object, similar to how you would take hundreds of photos for photogrammetry. NeRFs work better with reflective surfaces.
From there you could build a 3D model of the object that includes the case. Then you could measure the dimensions of the display case in person, and use that to determine your geometric dimensions. Luma Labs has a NeRF generation app. https://lumalabs.ai/