Small and medium-sized based manufacturing industry, despite being the most important industry in an economy is still grappling with unsteady processes, futile effort on controlling disturbances and erroneous deviation of its end-product resulting in waste of raw materials. Thus, necessitates to push Industry 4.0 (I4.0) higher at their agenda to increase manufacturing efficiency. Considering this, the manufacturer in this study is a mid-tier supplier of high-quality wood door for residential spaces and who frequently deals with modular and customizable door sets. This study makes the following contributions: (1) develop a microcontroller-driven automated system to accurately measure dimensions of door sets; (2) establish a communication to store-retrieve raw data using IoT technologies and (3) develop graphical user interface as diagnostic tool that generates statistical reports as data analytics. A low-cost ESP8266 (ESP) microcontroller Wi-Fi module interfaces with a rotary encoder us