Puretronics a wide range of electronic measuring instruments. They have introduced a non-contact laser diameter gauge and online controller in collaboration with an European company it is easy to use. It is made of aluminum housing for durability. Its measurement range is 0.8mm to 35mm and has a gate size of 50mm and scan velocity is 50m/s, having resolution is 1 micron with repeatability of +/- 2 micron it makes this device as one a kind for various application. The device accuracy of +/- 2 micron or +/- 0.3% of reading value helps the customer to maintain its accuracy of the product during manufacturing itself. This indeed saves the cost of further Quality control for the customer. The instrument finds use in wire drawing, fibre optics, telecom, buildingwire, powercable, tube extrusion glass rods/tubes etc. scan rate is 416/s. The unit has high and low value alarm on off selection and has automatic correction of line speed to match the set value, auto/manual selection. It has a 5digit display and simple operating key system with extension flexibility of control and display.