Abstract: A physiotherapy timing and control device for instructing a patient to perform a prescribed program of exercise including a series of "exercise" periods each followed by a "rest" period at the start of which the patient is required to read and record his pulse, includes a spring-wound timer having a dial time-graduated in intervals corresponding to the periods of the exercise program to provide visual guidance concerning the progress of the program, and signal generating means actuable in response to operation of the timer for generating an audible signal of relatively short duration at times corresponding to the start of an exercise period, and an audible signal of longer duration at times corresponding to the start of a rest period. In the preferred embodiment the longer audible signal has a duration of fifteen seconds so that a pulse count observed during the signal when multiplied by four gives the patient's pulse rate in beats per minute.