I made 2 round trips, 6 hour each between Ahmedabad and Rajkot to meet with a few of these engine manufacturing companies and its local market.
But everytime I travel to a new location, I am always amazed to see new devices or designs of devices for functions we take for granted.
The guy is using a regular "chula" for making tea, which is a coal burning stove. The uniquness of this chula is that there's a pump connected to it. So instead of waving a fan to heat the coals as normally done in any household, he uses a rotary pump to blow air into the chula.
All tea stall owners in the city use this chula design!!