Graphtec Corporation (TYO: 6968), formerly Watanabe Instruments, is a company for computer input and output devices in Japan.

It has subsidiaries in the USA, Europe and Australia.

Graphtec was established in 1949; their first plotter was released in 1961.

The plotters use Graphtec Plotter Graphic Language (GP-GL) which is not compatible with HP-GL, see its EAGLE definition: This article about a Japanese corporation- or company-related topic is a stub.

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