The concept of digitizing calibration processes is truly commendable. I would suggest utilizing Python in conjunction with Flask or Django for the web interface, along with libraries such as ReportLab for generating PDFs, as these tools align well with your requirements. Your initiative evokes the significant impact that digital strategies can have on various industries. As a specialist in digital marketing dissertations topics, I would be eager to collaborate should you consider documenting or further developing your project in an academic context. Wishing you the best of luck with this remarkable endeavor.