·  A set of system dual measurement and detection functions, at the same time with steel plate length measurement and steel plate position detection functions. A set of equipment is equivalent to "1 set of tachometer + 1 sign ruler + manual observation and judgment". It can greatly reduce or eliminate the phenomenon of short scale.

·  It is not affected by the round-trip movement and beating of steel plate.

·  Not affected by temperature.

·  The total investment of the equipment is low, and there is no need to change the roller roller.

·  Not affected by ambient light.

·  At the same time, it has the function of length measurement and video observation, the operation screen is simple, intuitive and clear, and the movement position and status of the steel plate head can be observed in real time, so that the operator can be intuitive and assured when operating.

·  Japan SONY high-grade CCD chip, long-term stable and reliable work.