A method of viewing a live image from a microscope through a camera lens of a first personal electronic device is described. The method includes receiving one or more optic powers of a microscope taking the live image entered into a first graphical user interface displayed on a screen of the first personal electronic device, and projecting a measurement tool on a second graphical user interface displayed on the screen of the first personal electronic device with units of measurement based on the entered optic powers. One or more non-transitory, computer-readable storage media and a computer or computer system are also described. Hardware designed to connect a personal electronic device such as a smartphone to a microscope for viewing of a live microscope image through the camera lens of the personal electronic device is also described.