Lens meter

A lens meter excellent in operability during alignment capable of informing in which direction a subject lens should be moved. A lens meter has a measurement optical system having an optical axis, a light source projecting a light bundle onto the lens, and a photo-sensor photo-receiving the bundle, a part which obtains the optical characteristics from a photo-receiving result, a device which detects an alignment condition of a desired position or region with the axis, a part which displays an alignment screen, and a part which provides fixed display of a target mark indicating a measurement position or region and provides movable display of a lens mark representing the lens and a guide mark indicating an alignment target position or region, where a movement direction of the lens relative to the axis coincides with movement directions of the lens mark and the guide mark relative to the target mark.