A measurement device that comprises a display control part that displays a measurement result obtained from a probe that measures a pH or the like, the display control part displays in a switchable manner at least two displaying screens among a numerical value displaying screen that displays the measurement result as a numeric value, an analog displaying screen that displays the measurement result like an analog meter and a graph displaying screen that displays the measurement result as a time series graph, and the display control part switches each of the displaying screens continuously in conjunction with a touch slide operation on the display by moving the displaying screen displayed prior to the touch slide operation to the outside of a displaying area on the display and by moving the other displaying screen to the inside of the displaying area in accordance with the above-mentioned movement.