Ticker tape timer
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These devices use an electromagnet which activates a striker, producing dots via a carbon disk on the ticker tape. The dots are produced at a rate of 50 - 60Hz depending on the mains frequency. With 4mm terminal sockets. The Ticker Tape Timers are used in the measurement of velocity, acceleration and general timing. There are 6V &12v units available - please check your unit rating before connecting the unit to a PSU.