Abstract: Apparatus for sensing distances in air by transmitting an ultrasonic pulse and measuring the time for return of an echo from a target object is characterized by ability to measure distances to multiple target objects. Preferably the apparatus defaults by displaying the distance to the nearest target but is provided with a push button which when pressed once causes display of the distance to the next target further away, when pressed again causes display of distance to a target after that and so forth. This novel function may be accomplished by discrete logic components or using a microprocessor.