The Pen in rotation is Pilot Non Self Filling Fountain Pen also known as Pilot Tank. It is an eyedropper and actually can take Con-20 converter. And it is inked with Sailor Jentle Shigure.
Today’s inspiration comes from one of the foremost Architect of America during his time, Louis I. Kahn. He was also the Architect of famous management Institute of India, IIM-Ahmedabad.