A simple, versatile pulse sequence generator for use with the McSkimin pulse‐superposition technique of measuring ultrasonic velocities is described. Standard TTL integrated circuits are used in construction of the unit. The generator produces a sequence either of two pulses followed by 2, 6, 14, or 30 spaces, or of four pulses followed by 4, 12, 28, or 60 spaces. The pulse repetition frequency is determined by an external oscillator operating at a multiple (one, two, five, or ten) of this frequency. Testing and operation of the unit is described.