This stroboscope has a wide range of applications, having high accuracy and a digital readout of selected flash rate. Applications include dynamics experiments, vibration modes in wires and sheets, measuring speeds and frequencies and demonstrating persistence of vision. Triggering is by internal switching or by an externally applied waveform.Built into a robust metal case with a durable powder coat finish. An illuminated on/off switch is mounted on the rear panel adjacent to a fused appliance inlet. The rear panel also carries the flash rate control and 4mm sockets and switch for external synchronisation.