Birmingham Assay Office was established in 1773 by Toy manufacturers producting plated goods like Matthew Boulton. Main products of Birmingham were plated by gilt technique, so it was not easy to get credit for their products as growing area. Assay office had to be needed not only for the...

In a postwar high-growth period, some Japanese industries which were classified as a glight machinery industryh appeared and contributed for acquisition of foreign exchange, especially American dollar. As a case study of these industries, this paper examined the development of Transistor radio...