A timer measurement device includes a signal output unit, an operation input unit and a processor. The processor stores ordered time settings including at least respective timer values. When an elapsed time that is measured by using a clock signal output by the signal output unit reaches a timer value of a time setting selected from the time settings, the processor resets the elapsed time, and switches the selected time setting to a next time setting among the ordered time settings. If the operation input unit receives a predetermined change command during, the measurement of the elapsed time for the timer value of the selected time setting, the processor performs, in response to the change command, a change processing which changes a remaining time with respect to the elapsed time for the timer value of the selected time setting.