Abstract This paper presents 3D model of a mechanical actuator which is designed in SolidWorks and manufactured in the workshop in order to apply it in the long-hole measurement system. During measurement of mechanical parts or components in industries, conventional system is usually apply to justify the accuracy of manufacturing parts. A mechanical actuator is very important in order to apply automatic measurement systems in manufacturing industries to reduce the error as well as measurement cost. 3D CAD design is very important in order to manufacture any mechanical parts in the workshop so that the preview of the desire parts can be viewed before it is being manufactured. SolidWorks provides easy solution to design such type of mechanical parts. Here, it is mainly discussed the design method of the developed mechanical actuator based on SolidWorks features.