PATHESCOPE 200-B 16mm conversion
This 200-b is an example of the conversion from 9.5mm to 16mm by the engineering company of Cinemsmith. In 1938 Pathescope themselves introduced a dual gauge version (16mm/9.5mm) which they called the 200BPLUS. 500watt lamp. Therte was also a very good engineered sound head for the 200B-PLUS (further research in place)