Concise Company, Ltd.
1954-present
The Concise Co. Ltd. was established in Japan July 1954 as a manufacturer of circular slide rules. They are still in operation, offering an expanded product line that includes dressmaking instruments, drawing tools, and stationary as well as slide rules.
"Corporate History," Concise Co., Ltd., http://www.concise.co.jp/en/user_data/history.php (accessed 09/04/2014)