Proceedings of Annual Conference on Management and Information Technology (ACMIT) 2018 78 Application of a Non-Contact Laser in Profile Measurement Edy Sujiwo Department of Mechanical Engineering, Swiss German University, Tangerang 15143, Indonesia Abstract. In the tire manufacturing process especially for the tread production process, one of the important things in making tread is parameter like length, width, and height. The width of this tread is very influential on the quality of the tread made; the more accurate the dimensions of the tread made then the quality of the product will be better. The current measurement is done by the manual method that is by using a simple steel roll meter. The possibility of measuring the error in viewing the number on the tools, that the measurement results do not match the actual tread size. This research is the application of a non-contact laser in profile measurement on the extruder machine so it can facilitate the work of employees in controlling the width of the tread. This design uses a Linear Motion Lead Screw Slide Stage (Stroke Actuator, Stepper Motor, and Driver), laser distance sensor and Arduino Mega 2560. In this prototype, the signal from the distance sensor is processed in the microcontroller and sends to the computer to create a curve graph in the computer display. The actual final result of the object profile measurement was provided. Keywords: tread; linear motion; laser distance sensor; profile measurement. 1. Introduction In the tire manufacturing process, the dimensional accuracy of a product's output is important in order to continue in the next production process. But this cannot be separated from human error if the measurement is done manually. Tire manufacturing process with accurate specifications will ensure the safety of consumers. Some components of tire manufacturing are of concern regarding the accuracy of the measurement. One of the material in the process is TREAD. Tread is the outer part of the tire in direct contact with the road media. The case of measurement error occurs on the measurement of the width of the tread. The current measurement is done by a manual method that is by using a simple steel roll meter. The possibility of measuring the error in viewing the number on the tools, that the measurement results do not match the actual tread size. In the manual measurement, employees are required to see accurately to avoid errors in the measurement of the resulting product. To reduce the occurrence of errors in making a product, the use of sensors is a way that is often used and done. In the process of making the tread parameters (length, width, and height) is very important, the width of the tread very influential on the quality of treads made. The most common problem with tread production is held tread. Hold tread is the width of tread over and width of tread under. Based on historical data of tread production in the tire manufacturing company, there is a variation of tread width causing hold in the process and return claim product. The current measurement process is shown in figure 1.