Using two fingers, you can pinch-zoom a device to a maximum image scale of 1.5x. Alternatively, the zoom button located in the toolbar may be used to toggle the viewing mode between the minimum and maximum image size.
When zoomed in on a device, you can use two fingers to pan and scroll the view. Otherwise, the view remains stationary, allowing device controls to be adjusted more easily.
When working with stacked knobs, remember that the top knob will be active by default. To switch focus to the bottom knob, press and hold on the knob-stack for one second and then make your changes.