A digital multimeter, comprising: a display for displaying measurement values associated with at least one electrical characteristic of an electrical circuit; a user interface for receiving a user input to select a mode governing a display format of the measurement values; a memory for storing an indication of the mode; and a processor for retrieving the indication of the mode from the memory, determining measurement values associated with the electrical circuit based on input to the multimeter, and generating display data for the measurement values in accordance with the mode, characterized in that, when the mode is a live measurement mode: live actual measurement values of the electrical characteristic are displayed in a first font size in the display, and when the mode is not a live measurement mode: live actual measurement values of the electrical characteristic are displayed in a second font size in the display while at least one non-live measurement value associated with the electrical characteristic is displayed in the display, wherein the second font size is smaller than the first font size, and the processor retrieves a stored threshold value from the memory, compares the live actual measurement values with the stored threshold value, and displays a warning message on the display when the processor determines that any live actual measurement value displayed on the display is greater than the stored threshold value. a display for displaying measurement values associated with at least one electrical characteristic of an electrical circuit; a user interface for receiving a user input to select a mode governing a display format of the measurement values; a memory for storing an indication of the mode; and a processor for retrieving the indication of the mode from the memory, determining measurement values associated with the electrical circuit based on input to the multimeter, and generating display data for the measurement values in accordance with the mode, characterized in that, when the mode is a live measurement mode: live actual measurement values of the electrical characteristic are displayed in a first font size in the display, and live actual measurement values of the electrical characteristic are displayed in a first font size in the display, and when the mode is not a live measurement mode: live actual measurement values of the electrical characteristic are displayed in a second font size in the display while at least one non-live measurement value associated with the electrical characteristic is displayed in the display, wherein the second font size is smaller than the first font size, and the processor retrieves a stored threshold value from the memory, compares the live actual measurement values with the stored threshold value, and displays a warning message on the display when the processor determines that any live actual measurement value displayed on the display is greater than the stored threshold value. live actual measurement values of the electrical characteristic are displayed in a second font size in the display while at least one non-live measurement value associated with the electrical characteristic is displayed in the display, wherein the second font size is smaller than the first font size, and the processor retrieves a stored threshold value from the memory, compares the live actual measurement values with the stored threshold value, and displays a warning message on the display when the processor determines that any live actual measurement value displayed on the display is greater than the stored threshold value.