Would like the ability to specify zoom to a tenth of a percent, as I can on desktop (e.g., 30.5%).

Many of us who sew now use projector files for cutting patterns rather than tediously cutting out paper patterns. Being able to calibrate and project at a specific zoom level is essential to cutting accurate pattern pieces. While I can connect my phone to my projector, there is currently no PDF viewer that will allow me to zoom exactly as needed from a mobile device.